Fashion Bluetooth Mobile Headband Earphone Model: LK-BH068 PRODUCT DESCRIPTION: 1. Spacious,Website:http://www.smartcoolproduct.com, clear sound with deep and enhanced bass and immersiver listening 2. Smooth highs and dynamic lows 3. Closed back design offers isolation and keeps the sound from disturbing your neighbors 4. Perfect use for CD, MP3/MP4 player. 5. Light-weight for comfort wearing 6. Noise free headset can be added; 7. Customers Logo available; 8. CE, ROHS Certeficates. Function characteristics:Bluetooth Version:CSR4.0Bluetooth Headphone(1) With bluetooth function(2) With Microphone function folding Output power:0.25W*2Frequency:20-20,000HzTransfer Distance:33ft (10m)Impedance:32 OHM(Ω)Lithium battery capacity:250mAhPlay/Talk time;5-6hoursCase Material:ABSDimensions: Weight: Color:blue,red,black