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1. Lever the battery cover open by using the clip on the strap.
2. Remove the old battery from the battery cover with a suit-
able sized small rigid stick or bar, such as a toothpick. A
non-metal tool is preferable. Be careful not to damage the
battery cover.
3. Insert a new battery (CR 2025) inside the cover with the
negative (-) side facing up.
4. Align the ledge on the battery cover with the slot on the
connector and press the battery cover back into place.
You should hear a snap.
Risk of explosion if battery is replaced by an incorrect type. Dispose of used batteries according to
the instructions.
PRECAUTIONS
The Polar V650 shows your performance indicators. The training device is designed to indicate the level of
physiological strain and recovery during and after an exercise session. It measures heart rate, speed and dis-
tance. It also measures cycling cadence when used with a cadence sensor. No other use is intended or
implied.
The training device should not be used for obtaining environmental measurements that require professional or
industrial precision.
INTERFERENCE DURING TRAINING
Electromagnetic Interference and Training Equipment
Disturbance may occur near electrical devices. Also WLAN base stations may cause interference when train-
ing with the training device. To avoid erratic reading or misbehavior, move away from possible sources of dis-
turbance.
MINIMIZING RISKS WHEN TRAINING
Training may include some risk. Before beginning a regular training program, it is recommended that you
answer the following questions concerning your health status. If you answer yes to any of these questions,