Features:1. Portable interphone highly compatible with any cellphone with built-in Bluetooth2. Smartly identify Bluetooth within 500m3. Automatic switch between call and stereo music， giving priority to incoming telegram4. Support call answering， barring， ringing off and tail number re-dialing5. Can be paired to GPS， Bluetooth for receiving voice instructions6. AVRCP remote control; for playing or pausing music7. DSP noise reduction treatment8. 8-hour talking time and long standby time up to 300 hours Specifications:1. Material: ABS2. Color: Black3. Quantity: 1 4. Voltage: AC 100-240V5. Battery: 300 mAh Rechargeable Polymer Battery6. Dimensions: (3.15 x 1.97 x 1.30)" / (8 x 5 x 3.3)cm (L x W x H)7. Weight: 1.58oz / 44.8gPackage Includes: 1 x Bluetooth Headset Host ，1 x Stereo Headset，4 x Velcro Pads ，1 x Headset Clip ，1 x Travel Charger(EU)，1 x USB Cable ，1 x Screw Driver ，1 x English Manual