Bingo S2 Sporty Look Wireless Bluetooth Headset Built-in MicEarphone with Magnetic Suction Design which helps you to easily remove the buckle in the neck and Not falls off during strenuous activity and make the earphones more Fashionable,it's easy to store and carry . BASIC PARAMETER Bluetooth Version: V4.1 Protocol: A2DP/AVRCP/HFP/HSP Transmission Distance: 8-10meter (Barrier Free) Battery Capacity: Polymer Lithium battery 80Mah Music Time: About 4-6h Talk Time: About 4-6h Standby Time: 200h Charging Time: 1.5h Size: 52mm*12.5mm*8.5mm Weight: 30gm Package Content: 1* Bluetooth Earphone,1*Manual Book, 1*Pair of Ear Bud, 1* Bluetooth Charging USB Cable, 1*Lock Kit FUNCTION Read the phone number automatically when there is a call-in, the last call can be called back via earplug. Language Available: English and Chinese. One-pull-two: Available. Stereophonic Reproduction: Available. USE OF BLUETOOTH EARPLUG Power ON: Press for 3 seconds until the red blue light flashes. Power OFF: Press “Power” for 3 seconds until the indicating light is off. Bluetooth Pairing: After power on ,the red-blue light flashes to do the searching; open the Bluetooth on the phone and find the pairing name; then connect it. Page Up: After being connected, long term press volume “-“ Page down: After being connected, long term press volume “+” Volume Increase: After being connected, slightly press “+” Volume Decrease: After being connected, slightly press “-” Play/Pause: When playing music, click “power” Call Back: After being connected, double click “power” to call back the last call; slightly press “power” to hang up. Language Switch: After power on, press Volume + and Volume – key for 3 seconds or after power on double click “power” Charging: After the battery is fully run out, the charging shall be done via the USB line, when it is being charged, the indicating light it is in red; when the charging is done, the indicating light is in blue. DISPOSAL OF ABNORMALITY The Bluetooth is disconnected or the voice is not continuous because of improper use or long term shielding, restart the Bluetooth earplug. Normally, different phones have different transmission distances.