... /next song l Compatible with most Bluetooth enabled devices, for example mobile phone, PDA, laptops, headset etc l External microphone ... Specifications: 1,Sound quality is so perfect 2,Stereo Bluetooth Headset(CSR) 3,Transmitter Power: Class 24,Operation Distance: ... Music Time: ≥16hrs11,Standby time:≥180hrs12,Headset Size: 171*159*69mm13,Weight: 138 g Stylish Wireless Stereo Bluetooth Headset (B-907)