Description of HBS-730 Neck Strap Two-link Wireless Bluetooth Earphone Bluetooth V2.1 Headset with Mic blackMain Features:Neck strap design, cable length adjustableNoise and echo cancellation functionCan connect two phones at the same timeIncoming phone call vibration functionOne-button control,

Description of HBS-730 Neck Strap Two-link Wireless Bluetooth Earphone Bluetooth V2.1 Headset with Mic blackMain Features:Neck strap design, cable length adjustableNoise and echo cancellation functionCan connect two phones at the same timeIncoming phone call vibration functionOne-button control, easy to reach and hang up phone calls.Specification:Model- HBS-730Color-BLACKWearing type- NeckbandFeature -Neck strap, Two-link, VibrationFunction -Voice control, Microphone, Answering phone, Song switching, Bluetooth, Noise CancellingConnectivity- WirelessPlug interface -Micro USBPower supply -3.7V 180mAh rechargeable batteryWorking time -Talk time: 15 hours, Music play time: 10 hoursStandby time -About 300 hoursCharging time- 2 hoursExtended Function- Bluetooth -YesBluetooth version -V2.1 EDRBluetooth distance -W/O obstacles 10mBluetooth model -Headset, Hands freeDimension and Weight Product weight 30 gProduct size (L x W x H) -16.5 x 12.0 x 1.5 cm / 6.5 x 4.7 x 0.6 inches.