Features: - Microphone adopts noise cancellation technology and provides you clear calls- Exquisite detail design offers you pleasant enjoyment- Compatible with many mobile phones, tablet computers and music players- Silicone ear caps, comfortable to wear and not easy to fall off- Surround design, strengthen bass effect and sensitivity- Push type volume button, convenient to control Specifications: - Impedance: 32 ohm- Cable length: 1200mm- Diameter of loudspeaker: 10mm- Sensitivity: 87 - 93dB- Frequency range: 20 - 20000KHz Connectors: 3.5mm Function: Microphone,Noise Cancelling Style: In-Ear Use: Computer,Mobile phone,Portable Media Player 0.044 Package weight: 0.06864 kg Package Size(L x W x H): 18.00 x 8.50 x 2.50 cm / 7.09 x 3.35 x 0.98 inches Package Contents: 1 x A8 In-ear Sports Headset, 1 x Leather Clip, 1 x Plastic Clip, 4 x Ear Cap