Specifications

Battery type

Rechargeable, built-in lithium-ion battery

Forerunner® 245 battery life, watch mode

Up to 7 days with activity tracking, smartphone notifications, and wrist-based heart rate

Forerunner 245 battery life, activity mode

Up to 24 hr. with GPS and wrist-based heart rate

Forerunner 245 Music battery life, watch mode

Up to 7 days with activity tracking, smartphone notifications, and wrist-based heart rate

Forerunner 245 Music battery life, watch mode with music

Up to 8 hr. with activity tracking, smartphone notifications, wrist-based heart rate, and music playback

Forerunner 245 Music battery life, activity mode

Up to 24 hr. with GPS and wrist-based heart rate

Forerunner 245 Music battery life, activity mode with music

Up to 6 hr. with GPS, wrist-based heart rate, and music playback

Water rating

Swim, 5 ATM1

Forerunner 245 Music media storage

3.5 GB (approximately 500 songs)

Operating temperature range

From -20º to 60ºC (from -4º to 140ºF)

Charging temperature range

From 0º to 45ºC (from 32º to 113ºF)

Forerunner 245 radio frequency/protocol

2.4 GHz @ 2 dBm nominal

  • ANT‍+® wireless communications protocol

  • Bluetooth® 4.2 technology

Forerunner 245 Music radio frequency/protocol

2.4 GHz

  • @ 2 dBm nominal ANT‍+ wireless communications protocol

  • @ 10 dBm nominal Bluetooth 4.2 technology

  • @ 13.6 dBm nominal Wi‑Fi® wireless technology

1 The device withstands pressure equivalent to a depth of 50 m. For more information, go to www.garmin.com/waterrating.
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