Santi Deluxe Heated BZ400 Extreme Undersuit Set

Our exclusive Santi Deluxe Heated BZ400 Extreme Undersuit Set with Heated Gloves is a ready-to-dive ultimate heating system with Santi's new-generation Blue Power battery and connection valve of your choice.

Slip on the undersuit and gloves, plug in power and don your drysuit as you would for a warm and comfortable dive with over two hours of run-time on this power-horse battery while using the undersuit and gloves simultaneously.

This set is perfect for divers who need more insulation than can be provided by 'passive' non-heated undersuits and is a full-blown heated system for those exceptionally cold, deep or long dives.

Santi Deluxe Heated BZ400 Extreme Undersuit Set includes

• Santi Heated BZ400 Extreme Undersuit
• Santi Heated Gloves 2.0 with cables
• Santi Blue Power Battery 28Ah with a charger
• Santi Drysuit Connector or Thermovalve 303 (⏎ Read the difference)

Santi BZ400 Extreme Heated Undersuit

Santi BZ400 Extreme Heated Undersuit is designed to comprehensively protect the whole body of a diver from the cold. The heated undersuit heats the trunk, thighs and arms evenly.

The BZ400 Extreme Heated Undersuit is designed to be worn on top of a thin base layer allowing most of the generated heat to be passed directly to the diver’s body.

The heated Santi undersuit gives you the best thermal protection underwater. It keeps you warm and comfortable while heating, even when the batteries are low or completely drained.

The new generation of heating wire is covered with ultra-soft, silicone isolation resistant to breaking. Innovative, synthetic power cable is resistant to high temperatures and cuts.

• Made of BZ400 (420g/m²) Thinsulate™
• Built in heating glove wires
• Handy pocket on waist for power cord
• P-valve hose opening
• Net cuffs with rubber loops for thumbs
• Elastic gussets under the armpits
• Two side pockets
• Elastic waist band
• Two way entry zipper
• Foot straps
• Maximum heating temperature 45°C
• Heating power: 110 W
• Safety switch prevents from overheating
• Wires covered with ultra-soft silicone resistant to breaking
• Power cable resistant to high temperatures and cuts
• Undersuit bag included

Santi Heated Gloves 2.0

Santi Heated Gloves 2.0 are very soft and do not hinder movements. The thin heating cables are arranged and sewn to be practically imperceptible. Under your dry glove you don’t feel the difference – is it your normal gloves or the heated ones? But you can feel the difference in the comfort you experience.

Hands are the first to get cold. When chilled and numb, they cause discomfort. But they are also incapable of properly handling inflators or valves, taking pictures or videoing. Capable hands are also helpful if you want to quickly escape troubles underwater.

Evenly distributed heating wiring that allows for freedom of movement in palms. The gloves keep your hands warm even when the heating is not on.

Heated Gloves can be easily connected to Santi Heated Vest or Undersuits without additional cables.

• Includes: gloves and cables
• Breathable fabric
• Maximum heating temperature 45°C
• Maximum heating power: 36W (pair)
• Maximum operating voltage: 12V

Thermovalve or Drysuit Connector?

Both the Santi Thermovalve 303 and the Drysuit Connector are used to connect an external power source to your Santi heated vest, heated gloves or heated undersuit. Both are available in Apeks or SiTech fittings.

The Santi Drysuit Connector does this by being attached to your existing drysuit inflation valve, continuing to use the original valve for inflation and running power through the connector element. It adds 19mm height to your valve.

Thermovalve 303’s great advantage is placing the cable with the E/O connector in the down position, with the possibility of turning the head by 270 degrees, which allows for trouble-free connection of the hopper cable both in the position of the connector to the right and left.

Read our SANTI Thermovalve and Drysuit Connector comparison

Santi Blue Power Battery

The Santi Blue Power Battery Large - 28Ah marks the beginning of a new generation of batteries dedicated to the Santi heating system(s) with double the power of the new Blue Power Medium 14Ah battery.

Uniting modern technology and contemporary electronics, the Santi Blue Power battery will allow you to enjoy uninterrupted and unflagging heat comfort over time.

With its two settings, the Santi Blue Power battery allows 2 levels of heating and independent, non-invasive (field) replacement of the power cable if necessary.

The difference

Several important features distinguish the Santi Blue Power battery from other batteries available on the market:

• The ability to maintain a stable voltage level, thus maintaining a constant heating temperature throughout the battery's run time during a dive.
• Two levels of constant voltage output set by the user as needed: (1) For typical heating power needed - Operated at 11V; (2) For higher heating power needed - Operated at 12V
• A new ergonomic design of the E/O cord connector with two LEDs  
• Audible and luminous indication of the battery mode along with an indication of low charge level.
• Anti-slip casing and ergonomic shape are particularly useful on the surface.
• The possibility of simple field replacement of the E/O cord cable in the selected length without having to send it for service.
• A new failure-free piezoelectric button.

Maximum operating times

• Santi Heated undersuit (110W): 3h
• Santi Heated vest (55W): 6h
• Santi Heated gloves (36W): 10h
• Santi Heated undersuit with gloves (146W): 2h 20min
• Santi Heated vest with gloves (91W): 3h 30min

What does the value represented in watt-hours mean?

Santi Blue Power batteries are available in two capacities, medium (14Ah) and large (28Ah).

In the case of the 198Wh Blue Power Medium 14Ah Battery setting the diver will have 198W of power to use in one hour. The diver will have 99W to use in two hours, and in four hours, about 45W.

Example 1:
Santi's heating vest has 55W + heating gloves 36W - a total of 91W. So 198Wh with a 14Ah battery will allow the equipment to be used for: 198Wh / 91W = 2.17h or about 2 hours and 10 minutes.

Example 2:
The heating gloves have 36W. So 397Wh with Blue Power Large 28Ah will allow heating gloves for: 397 Wh / 36W = 11.02h or about 11 hours.

The above result is also affected by the temperature at which the battery operates.

What systems can the Santi Blue Power battery be used for?

Whichever one of the two batteries you use, the Santi Blue Power battery is dedicated only to powering the Santi heating system components. The technology used in the batteries is not compatible with other devices.

DOWNLOAD: Blue Power Battery Manual

Want to know which batteries can be used with SANTI heating systems and decide which suits you best? Check out our  Comprehensive Review of Batteries for SANTI Heating.

Santi Heating Systems at glance

FREE "Made to Fit"

Very few divers require a totally made to measure suit due to the wide range of standard sizes available from Santi Diving. With this in mind, Santi offers a free of charge Made-to-Fit service to any standard size suit ordered, sculpting standard suits to a divers' measurements.

With your order, you can request up to 4 changes (ranging from 2 to 5 cm) to any of the standard size measurements listed under chest, inner arm, biceps, forearm, waist, hips, inner leg, thigh, calf or body trunk on the SANTI size chart.

Heated Gloves

UNDERWATER EXPLORERS LTD/DIRDIRECT DISCLAIMER:
It is the customers responsibility to choose a correct drysuit size. Modified undersuit returns are not accepted under any circumstance unless Underwater Explorers Ltd/DirDirect has made a mistake. We do not take any responsibility for a fit of suits unless measured by us. 

HOW TO MEASURE YOURSELF FOR SANTI SUITS

Carefully watch SANTI's Instructions for Measuring video below. The video shows all measurements for made to measure suits. For standard size or Made-to-Fit measurements please use the Size Chart.

STEP-BY-STEP

Never take your own measurements yourself! Measurements should be taken by another person to make sure all measurements are taken tight up to the body and at correct placement for a specific measurement.

It is important that you stand straight, look forward and do not bend over while you are being measured. It is equally important to take the measurements only while wearing thin clothing, close to the body. Don’t leave any additional measurement allowance.

CHEST - on the widest point.
INNER ARM - from armpit to wrist.
BICEPS - widest point on the loose arm. If you have a visibly athletic figure it is advised to measure the biceps also with bent elbow.
FOREARM - in the widest point.
WAIST - measure on the belly button level. Remember to measure the waist line in the widest point on the belly button line. To measure a female waistline correctly, use any kind of "marker belt" and fasten it around the waist line.
HIPS - in the fullest point of the buttocks.
INNER LEG - hold one end of the measurement tape in the crotch and measure to the heel end.
THIGH - widest point approximately 5cm from the crotch area.
CALF - measure the calf at the widest point.
BODY TRUNK - hold one end of the tape on the central point of the neck end and lead the tape across the crotch to the back. Mark the place where tape ends and measure the rest of the line to the spine neck bone. Make sure the tape is close to the body including all the curves.

UNDERWATER EXPLORERS LTD/DIRDIRECT DISCLAIMER:
It is the customers responsibility to choose a correct drysuit size. Modified undersuit returns are not accepted under any circumstance unless Underwater Explorers Ltd/DirDirect has made a mistake. We do not take any responsibility for a fit of suits unless measured by us. 

SHIPPING:

We aim to dispatch all in-stock items within 2 working days but will inform you of approximate delivery times should any item on your order be out of stock or on supplier backorder due to current manufacturing or transport delays caused by global shortages and/or impeded production.

Please refer to our Shipping Policy and Returns & Refunds Policy for detailed information on delivery terms and returns.

Our current shipping rates are as follows:

• UK mainland orders £45 and over: FREE
• UK mainland orders under £45: £4.90 Fixed Rate
• Channel Islands, Isle of Man & Highlands: £9.90 Fixed Rate
• Northern Ireland: £14.9 Fixed Rate
• European Union: £13.90 + 5% of order value (maximum £30)
• Rest of the World: £19.50 + 8% of order value (maximum £55)
• BFPO Post Codes: £20

INTERNATIONAL EXCEPTIONS:

For international orders containing weights, cylinders (excluding suit inflation bottles) and Suex scooters please contact us in advance before placing your order.

These products are not included in our global max-capped shipping rates and are only shipped outside of UK mainland after freight cost is calculated based on total weight, dimensions of parcel, location of delivery and the courier service used. We will let you know what this cost will be before processing any order.

All cylinders we ship within and outside of UK mainland are filled and tested on site before being emptied for dispatch. Cylinders shipped outside of the UK will be empty and will also have their valves removed, requiring reassembly after you receive delivery. Twinset manifolds and bands will also be removed and dispatched together with the cylinders for safe global shipping.

RETURNS & REFUNDS

We offer a 30 day return for any product sold under our Returns & Refunds Policy Please contact us before any return with your order number and date details. Receive our Returns Authorisation Form and instructions and enclose them with your return to expedite a refund. Detailed information is available in our Returns & Refunds Policy.

Email us at sales@dirdirect.com or call us on +44(0)1305 824 555

Note that all returned items are shipped at the customer's own risk and remain the customer's property until received by Underwater Explorers, so please ensure they are packaged well and use reliable postal services with tracking facilities. The goods will be inspected on arrival. 

Return postages are at your own cost and our outbound shipping costs (if items are sold with integrated basic shipping charges i.e. Free shipping for orders £45 and above) the UK shipping rate may be deducted from any UK mainland refund unless linked to a fault/defect claim. 

Please contact us with your order number and name before sending any returns to:

Underwater Explorers – Returns
Unit 1, Maritime Business Centre
Mereside, Portland
Dorset, DT5 1FD 
United Kingdom

Please refer to our Shipping Policy and Returns & Refunds Policy for detailed information.