Celebrat A4 Wireless Bluetooth Headphones

Large capacity battery of 300mah •wired / wireless mode •bluetooth v4.2 •charging voltage: dc 5v •sensitivity: 100db+3db •impedance: 32 •audio performance: sbc decoding •battery: 300mah polymer lithium battery •charging time: about 2hrs •play time: 8-10hrs •call time: about 8-10hrs •standby time: 2 months