Bass Jaxx Bluetooth Cosmos Wireless Headphones

Bass Jaxx Bluetooth Cosmos Wireless Headphones Collapsible design Rechargeable lithium-ion battery 3.7v (included) Built in microphone Micro USB Cable (included) Instruction Manual (included) Compatible with iPhone, Android smartphones, iPad/Tablets, iPod, MP3 Player, Laptop Ultra soft headband cushion Ultra soft ear cushions On/Off button LED indicator Charging time: 3 hours Standby time: 50 hours Receiver distance: 32.8 ft Bluetooth version: 2.1 Sensitivity: 110db Impedance: 30ohm +\- 10% Driver diameter: 40mm Frequency Range:20Hz-20KHz Power Supply: Lithium-ion Battery Voltage: 3.7V