Suunto 3 Fitness - Reference - Technical specifications
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Suunto 3 Fitness User Guide

Technical specifications

Technical specifications


  • Model: OW175
  • Operating temperature: -20° C to +60° C (-5° F to +140° F)
  • Storage temperature: -30° C to +60° C (-22° F to +140° F)
  • Water resistance: 30 m (98 ft)


  • Battery type: rechargeable lithium-ion battery
  • Battery life: 10-40 hours, depending on conditions and settings (5 days daily use)
  • Battery charging temperature: 0° C to +35° C (+32° F to +95° F)

This product contains a non-replaceable, rechargeable lithium-ion battery.

Optical sensor

  • Optical heart rate by Valencell

Radio transceiver

  • Bluetooth Smart compatible
  • Frequency band: 2402-2480 MHz
  • Maximum output power: <6 dBm
  • Range: ~3 m/9.8 ft


Suunto Oy

Tammiston kauppatie 7 A

FI-01510 Vantaa


Date of manufacture

The manufacturing date can be determined from your device’s serial number. The serial number is always 12 characters long: YYWWXXXXXXXX.

In the serial number, the first two digits (YY) are the year and the following two digits (WW) are the week within the year when the device was manufactured.