> SPECIFICATIONS > Specifications




1. Features

Three-hand (hour, minute, and seconds) analog display and digital display

2. Frequency of crystal oscillator

32,768 Hz (Hz = Vibrations per second)

3. Loss/gain (Monthly rate)

Monthly average loss/gain ± 15 seconds
Only if worn on the wrist in a temperature range of 5°C to 35°C.

4. Operational temperature range

−10°C to +60°C (the display function is 0°C to +50°C)

5. Driving system (analog)

Step Motor, 3 pieces

6. Display (digital)

FE (field effect) nematic liquid crystals

7. Power source

Rechargeable battery: 1

8. Duration

Approx. 5 months (if the watch is not exposed to light after a full charge, the stopwatch is used an hour a day, the light is used once a day (2 seconds), the alarm is used once a day (10 seconds), power save mode is engaged for 6 hours a day, and 50 diving logs are recorded a year [including 25 in night diving mode])

9. Light (digital)

Internal light: LED

10. Electronic circuits

Oscillation, division, drive, LED circuit: C-MOS IC (3), pressure sensors (1)

The specifications are subject to change without prior notice due to product improvements.

Because the H855 makes its calculations based on the specific gravity of seawater (1.025), there will be errors in water depth measurement when used in freshwater.