Brand No Model BH23 Quantity 1 Color Red + black Bluetooth Version v2.1 + EDR Ear Coupling Wireless and Bluetooth Talk Time 9 Hour Standby Time 180 Hour Operating Range 10 meter Compatibility V2.1 / v1.1 Microphone Yes Radio N/A Supports Music Format MP3 Power Supply Built-in battery Built-in Battery Capacity 280mAh Compatible With Laptops tablets Ipad Iphone and cellphones w/ bluetooth Other Features Bluetooth protocol: HSP / HFP / A2DP / AVRCP; Frequency: 2.400~2.4800GHz; Talking time:10h; Bluetooth MP3 playing time: 8~9h; Battery charging time: 1~2h; HSP: earphone mode for single channel voice talking; HFP: handsfree dial and answering; A2DP: advanced audio distribution supports stereo music playing; AVRCP: audio video distance control distance music control (pause play next last); Interface: Mini USB Packing List 1 x Headphone1 x USB cable (50cm)