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