Microphone: picks up your voice input; Call Button: Controls several headset functions.
Manufacturer Specifications
# Blue Indicator Light(LED): display the headset state
# Call Button: Controls several headset functions
# Earhook: Attaches headset to ear
# Volume+ Button: add the headphones volume
# Volume-Button: decrease the headphones volume
# Microphone: picks up your voice input
# Charging Port: using for connecting the fit battery charger
Charging Your Headset
First time charge: Before using the headset, charge the power at least 2 hours. Recharging: When you hear five rapid high voices through the headset speaker, repeating at per 20 seconds, the headset battery needs to be recharged. Over extended periods of time, battery gradually wears down and requires longer charging times. This is normal. The more you talk on the phone with the headset, the less waiting time your battery has. The rechargeable batteries that power this product must be disposed of properly and may need to be recycled. Contact your local recycling center for proper disposal methods.
Warning
Never dispose the batteries in a fire because they may explode.