THERMOSPHERE, 42 mm, Hook Strap
$2.467
incl. VAT
on a steel bracelet
Delivery time: 4-5 days
In stock
Size chart for bracelets
To determine your strap/bracelet length, you can either measure your wrist circumference and determine your bracelet length in the table or use our templates, which you can download below.
Please find our templates for download here:
Instructions: Print out the document and make sure that no page scaling is preset. Cut out the template along the red dotted line. Place the watch on your wrist and pull the strap through the cut slit. Make sure that the template is not too tight on your wrist and that you have a little space between your fingers.
Please note that leather underbands result in a longer strap length.
Strap lengths:
417 ES/415 ES/PIONEER: S = (10.5 / 6.5 cm) M = (11.5 / 7.5 cm) L = (12.5 / 9.0 cm)
AQUASPHERE(FLY NAVY Aerosphere rubber strap: M = (10.0/8.0 cm) L = (11.5/9.5 cm)
PRIMUS: S = (9.5/7.5 cm) M = (10.5/8.5 cm) L = (12.0/10.0 cm)
RACEMASTER: S= (10.4/6.4 cm) M= (11.4/7.4 cm) L= (12.4/8.4 cm)
| Model | Lug width | Wrist circumference S-band | Wrist circumference M-band | Wrist circumference L-band |
| General recommendation, regardless of model and band | 13.0 cm - 16.0 cm | 16.5 cm - 18.5 cm | 19.0 cm - 22.0 cm | |
| PIONEER Silva | 20 mm | 13.0 cm - 17.0 cm | 15.0 cm - 21.0 cm | 18.0 cm - 23.5 cm |
| 417 ES 1954 (with leather strap) | 20 mm | 13.0 cm - 17.0 cm | 14.0 cm - 20.0 cm | 17.0 cm - 22.0 cm |
| PIONEER Mk I, Mk II, TachyTele, Preventor9, 415 ES | 20 mm | 13.0 cm - 17.0 cm | 14.0 cm - 20.5 cm | 17.0 cm - 22.5 cm |
| Preventor HD12™ | 20 mm | 13.0 cm - 17.0 cm | 14.0 cm - 20.0 cm | 17.0 cm - 22.0 cm |
| 417 ES (with bund strap) | 21 mm | 13.0 cm - 19.0 cm | 14.0 cm - 20.0 cm | 18.0 cm - 23.0 cm |
| PIONEER TwinControl, MonoControl | 21 mm | 13.0 cm - 19.0 cm | 15.5 cm - 21.5 cm | 19.0 cm - 23.5 cm |
| PIONEER One | 21 mm | 13.0 cm - 19.0 cm | 15.5 cm - 20.5 cm | 18.0 cm - 23.5 cm |
| PIONEER TwinDicator, MonoScope | 23 mm | 13.0 cm - 19.0 cm | 15.5 cm - 21.5 cm | 18.0 cm - 24.0 cm |
| AQUASPHERE/FLY NAVY Aerosphere rubber strap | 20 mm | n/a | 15.5 cm - 19.5 cm | 17.5 cm - 22.0 cm |
| RACEMASTER | 23 mm | 13.0 cm - 18.0 cm | 16.5 cm - 21.5 cm | 18.5 cm - 23.5 cm |
| PRIMUS leather | 24 mm | 13.0 cm - 17.5 cm | 16.0 cm - 20.0 cm | 18.0 cm - 22.5 cm |
| PRIMUS rubber | 24 mm | n/a | 14.0 cm - 18.5 cm | 17.5 cm - 21.5 cm |
| PRIMUS Textile | 24 mm | n/a | 14.5 cm - 19.5 cm | 17.5 cm - 21.5 cm |
Limited to 112 pieces
Hanhart THERMOSPHERE
Limited to 112 pieces, its production number references the European emergency number for fire and rescue services.
Reduced to the essentials and clearly built for operational use, the THERMOSPHERE places function and resilience at the centre. It was developed for situations in which technical reliability is not optional, but essential.
DESIGNED FOR THE EXTREME
BUILT FOR THE MISSION. AGAINST THE CLOCK.
Developed in collaboration with the Baden-Württemberg State Firefighters’ Association, the watch transfers key time markers from a breathing apparatus operation onto the rotating bezel.
In doing so, the model combines a robust operational aesthetic with a clear functional concept.
112 PIECES
The inspiration: timing a breathing apparatus operation
Under zero-visibility conditions and extreme physical strain, the surrounding environment loses all definition. Decisions are no longer based on what can be seen, but on what remains available: breathing air. Every operation follows a precise time window, defined by the limited service duration of the breathing apparatus and the requirements of respiratory protection monitoring.
This is precisely the reality from which THERMOSPHERE was born. Shaped by the experience of firefighters in Baden-Württemberg and developed with a focus on those who take responsibility under the most demanding conditions. THERMOSPHERE makes time visible — creating orientation where it is needed most.
SPECIAL ELEMENT – 112
IDENTITY IN EVERY DETAIL
At the center of the design is the rotating bezel with its distinctive triangular luminous markers. These are based on the time checkpoints used in breathing apparatus monitoring and provide intuitive readability.
At the start of a breathing apparatus operation, the solid triangle on the bezel is aligned with the position of the minute hand. The maximum operational duration, limited by the available breathing air supply, can then be read directly: typically 30 minutes when using a single air cylinder and 60 minutes when using two cylinders. The different symbols on the markers indicate both the total duration and the intermediate time checkpoints.
A distinctive design feature is the “112” at the 12 o’clock position.
As the Europe-wide emergency number, it symbolises readiness, responsibility and service to others. The colour accent on the first digit deliberately highlights its dual meaning, turning this defining element into a bold and characterful focal point.
DEVELOPED FOR THE MISSION
Scratch-resistant sapphire crystal and 30 ATM water resistance
For different requirements and style preferences, the THERMOSPHERE is also optionally available with a high-quality stainless steel or rubber strap.
Scratch-resistant sapphire crystal reliably protects the dial against the stresses of everyday use. With water resistance of 30 bar, equivalent to approximately 300 metres, the THERMOSPHERE remains a dependable companion even under demanding conditions — on duty, in training and in everyday life.
CASE
DIMENSIONS
- Diameter 42 mm
- Height 12.95 mm
- Lug-to-Lug 49 mm
MATERIAL
- Stainless steel, satin/polished
BEZEL
- Fluted blue bezel with ceramic insert
- Triangle, indices and numerals coated with Super-LumiNova®
- Can be turned counterclockwise
GLASS
- Convex, internally anti-reflective sapphire crystal
CASE BACK
- Screwed case back
- Engraved limited-edition number „XXX/112“
WATER RESISTANCE
- Water-resistant up to 30 bar/30 ATM in accordance with DIN 8310
MOVEMENT
CALIBER
- Mechanical movement: Sellita SW 200-1 oder Soprod
- 28,800 A/h (4 Hz)
- 25 jewels
POWER RESERVE
- 38 hours after full winding
FUNCTIONS
- Three-hand, hour, minute and second display
- Genuine three-hand movement with date display
- Special display designed to support emergency responders
DIAL
DIAL
- Dark blue dial with modern Hanhart logo
- Additional highlighted “1” at 12 o’clock to emphasise the European emergency number 112
- Red Flame and Red Lion – Official Emblem of the Baden-Württemberg Firefighters Association
NUMBERS
- Super-Luminova® coated
HANDS
- Super-Luminova® coated
- Skeletonized hour and minute hands
STRAP
STRAP
- Rubber, textile strap or stainless steel bracelet
- Lug width 20 mm
COLORS
- Black, blue or stainless steel
BUCKLE
- Folding clasp
