Specifications:• Product name: Bluetooth headset• Bluetooth version: Bluetooth V4.0 + EDR• The latest version of A2DP 1.2 and AVRCP 1.0 profiles supports• Supports Bluetooth headset and hands-free profile (HFP 1.5)• RF Frequency Range: 2.402-2.480 GHZ, ISM 2.4G Band• Radio representation: receives the sensitivity of -84dB / 0.1% BER• SNR: 95dB• Li-polymer battery 400 mAh Rechargeable• Speaker driving unit: 40mm• Impedance: 32Ω• Frequency: 20Hz ~ 20 KHz• Micro: omnidirectional micro HD• Distortion: ≤ 0.1%• Normal charging time: about 2-2.5 hours• Talk time: up to 10 hours• Standby time: up to 250 hours• Compatibility: for mobile phone, tablet, PC, laptop, MP3, MP4 etc.• Colors: white ornage, pink white, blue white, green white, red white,Black Pink, Black Blue, Black Orange, Black Green, Black RedCharacteristics:1. bluetooth 4.0: adopt the international high-end chipset bluetooth 4.0 CSR, it can create HD audio and a wide frequency response rrom 20Hz to 20kHz, lower power consumption, superior compatibility, compatible for almost all mobile phones, tablet PCs, laptops, all devices with bluetooth function2. support for TF card playback and FM Radio function: with an SD card slot, a small SD card is enough to enjoy the music anytime and where; has an FM Radio function, allowing you to listen to Radio anywhere, anytime (note: FM Radio may not work in some foreign countries).3. smart hands-free speaking: Built-in hidden high-definition sensitive microphone, the headset itself Has an incoming phone call answer button to pick up a phone call, talking wireless handsfree.4. Superior Noise Cancellation Performance: Acoustic echo cancellation and noise reduction effectively reduce ambient noise by speaking, making the distant listener unable to hear what you say is becoming history, just like talking face to face.5. foldable design and comfortable wearing experience: foldable design, the helmet is super lightweight, based on ergonomic design, green leather helmet, providing you with a comfortable wearing experience.6. Working distance:> 10mm without obstruction like building or magnetic field7. Support device: Mobile phone with bluetooth function, for iPhone, Smartphone, PC, for iPad etc. Package list: 1 x Bluetooth Headset1 x USB charging cable1 x User ManualNote: this price is not included in the retail box !!