KS Wireless Bluetooth Sport Stereo Headset Headphone for Samsung iPhone LG Two Tone (White & White) Features: Memory Elastic Neck Strap; Hybrid Power Switch; Easy Volume Control; Call Vibrating Alerts; Noise & Echo Reduction; Play / Pause Button for your Music or Videos (Most other products don't have this feature); Features: Forward / Backward Button for your Music or Videos (Most other products don't have this feature); Connect to multiple devices simultaneously! Listen to music without missing a call!; Ultra Light Design with Magnetic Earphone Storage Specifications: 360 Stand By Hours; 10 Call Hours; 10 Music & Video Hours; Bluetooth 2.1 + EDR; Charging Voltage: Micro UsSB 5v; Working Current: 25-30 mA; Output Power: 2x20mW; Bluetooth Range: 10M; Frequency Range: 2.401 - 2.480 GHz; Frequency Response: 20HZ - 20KHZ; Distortion Factor: &lt; 1%; Weight: 32g Package Includes: 1 x Wireless Bluetooth Hands Free Sport Stereo Headset; 1 x Micro USB Charging Cord Colors: Black / White / Orange / Pink