How long does it take to fully charge the device?

Ensure you fully charge your head sensor battery before first time use. If your head sensor’s battery is completely drained, the normal charging time is as follows:

When the battery is fully charged, the charging process stops automatically. Leave the head sensor in a secure place when not in use. The LED turns OFF to indicate that charging is complete. Be aware that charging time may vary depending on the remaining capacity of the battery. For instructions on how to use your charging lead, see the previous section.