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GH-625M GPS Outdoor Training Watch

GH-625M provides the Heart Rate Monitor sensor.

  • Built-in SiRF Star III high performance GPS chipset. Excellent sensitivity for fixing the position even at a weak signal status.
  • With built-in rechargeable and high capacity lithium-ion battery.
  • Large LCD for easy read.
  • WAAS / ENGOS support
  • Waterproof and rigid design to avoid damaging with carelessness.
  • Recording all history of self-training by defined day.
  • GH-625 can be used as a GPS receiver by easy setup.
  • The firmware of the GH-625 series can be upgraded through PC.


  • Tracking your route as crumb method; mark and save your tracking points by special algorithm; find the specified location.
  • With Heart Rate Monitor Sensor (For 625M model)
  • Support Google Earth file format
  • Embedded high capacity flash memory to store the plenty of data.
  • Calories calculation.

Track Back:

  • Giving you a reference route according to your activity before to get better performance of training

Application Software

  • Supporting the operating system such as Windows 98/2000/XP
  • Smart training database management and easy to use.
  • Easy to use for upgrading the device firmware.
  • Using GS-Sport Training Gym

Number of Waypoints


Tracking point




Display Size

24.9 x 39.88(H x W in mm.)

Display type

Black & White LCD

Pixels (H x W)


Unit Weight


Waterproof Standard


Unit Size

76.5 x 61.5 x 17.5 (L x D (Φ)x H in mm.)

Backlit Display

Single level

Operating temperature

-10C to 60C


5% to 95% Non-condensing


3.7 V for a rechargeable battery, 5V for charging input.

Charging connector



Rechargeable 750mAh Li-ion battery (For B series)
Rechargeable 625mAh Li-Polymer battery (For M series)

GPS Chipset SiRF Star III

Power Consumption

GPS, HBM & Backlight off

25 mA

GPS on (no fixed); HBM & Backlight off 

60 mA

GPS on (3D fixed); HBM & Backlight off 

58 mA

GPS (no fixed), HBM on; Backlight on

 73 mA

Battery life

  • 13 hours (3D fix, GPS on; HRM & Backlight off)

  • 12 hours (3D fix, GPS, HRM & Backlight on)

  • 25 hours (GPS, HRM off; Backlight off)

For B type

  • 11 hours (3D fix, GPS on; HRM & Backlight off)

  • 10 hours (3D fix, GPS, HRM & Backlight on)

  • 21 hours (GPS, HRM off; Backlight off)

For M types

 Connect to PC Interface

Probe Pin to USB interface 


Mini USB 350mA, 3 hours completed 


L1, 1575.42MHz

 Heart Rate Monitor (HRM) Operating

(HRM Receiver on PCBA)

 Operating Voltage



 Crystal 32.768KHz

 Standby current

 <0.5 uA

 Operating current

 <15 uA (without external circuit)

(HRM Chest-belt)

 Operating Voltage


 Oscillator Crystal


 Standby current

 <0.5 uA

 Operating current

 <100 uA

 Transmission current

 <6 mA

 Battery life

 1300 hours

 Battery type


 Transmission frequency

 5 KHz

 Transmission distance

 >0.8 meter

 Transmission signal type

 Analog signal without coded

 Transmission time

 20 ms

This product was added to our catalog on Thursday 24 November, 2011.
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