?More Details:<br><br><br><br><br><br>Specification:Model Name: DIGICARE DO Bluetooth Version: (ISSC1861S) 3.0+ EDR\/(CSR8635) 4.0Battery Capacity: 260mAh polymer batteryCharging Time: Micro USB port and need 2 hoursPlay Time: 6 hoursStandby Time: 10 daysEffective Range: 10m (33 feets)Mono\/ Stereo: StereoWeight: 45gReceiver Sensitivity: 88dBmImpedance: 32 &amp;Omega;Prequency Range: 20-20KHzFM: NoTF Card: NoSystem Language: English- Prompt tone is EnglishBluetooth Profile: A2DP\/ HFP\/ HSP\/ AVRCP\/ GAVDP\/ AVDTP.<br>Basic Operation:Answer call and ending call: Clik the call buttonReject Call: Long press call button for 1sTransfer call to phone: Long press call button for 1s during call.Re-dial last call: Double click call buttonVoice Control: Long press call buttonVolume Control: Click the volume button&amp;quot;+&amp;quot; &amp;quot;-&amp;quot;.<br>Notes:1. If the connecting distance is beyond the bt headphone effective range(10m or 33feets)｣ｬ the headphone will disconnect with the device. Once in effective range again｣ｬ they will connect again automatically. But ifthe disconnecting continues for long time(over 3mins)｣ｬ you maybe need to double click &amp;quot;Play&amp;quot; button to connect again.2. If turn off the device｣ｬ bluetooth headphone will disconnect. When turn on the device｣ｬ only need to double click&amp;quot;Play&amp;quot;button to connect.