High-fidelity Stereo Sound Quality- built-in high sensitivity microphone and noise canceling technology(not active noise cancellation), ensure crystal high quality sound no mater you are calling or listening to music. | Outstanding Battery Performance- The portable designed headphone built with large capacity battery, which provides up to 16 hours of continuous music time and 300 hours of standby with a single charge. | Advanced Bluetooth 4.1+CVC 6.0- latest Bluetooth 4.1chip provides fast, stable and low-power connection. These headphones are compatible with most smart phones, iPhone, Android devices and other Bluetooth Enabled Devices. | Neckband Design- Around-the-Neck wearing design with perfect Body-Contoured fit. Made of environmental ABS+PC material, light and soft to wear comfortably, perfect for long time wearing no matter in outdoor activities or in office. | Foldable and Retractable Design- Foldable design enables you to take it anywhere in your pocket or in your bag. Retractable Earbuds- a unique design for cable management, no more tangled wire obsession.

Comfortable Neckband Design: The ergonomic neckband design effectively reduces the burden on your ear, provides most comfortable wearing experience for everyone. Foldable and Retractable Design: Humanized foldable design makes the headset super compact, easy to carry in your pocket or bags; Pull the earbuds to the length you want, easy to retract with only one press, very convenient to use. Long-Lasting Battery: Provides up to 16 hours of continuous talking/music time and 300 hours of standby with a single charge, perfect choice for all day outdoor activities. Top Level Sound Quality: Featured with CVC Version 6.0 noise cancellation technology, ensure crystal sound for music and clear voice for calls Vibration and Voice Prompt: The Bluetooth headset vibrates when there is a phone call, never miss any phone call even in a noisy environment.. Retractable Earbuds: Just one press to retract the earbuds, amazing design for batter cable management Specifications:1. Correspond with: Bluetooth 4.1 2. Support: HSP, HFP, A2DP, AVRCP 3. Transmitting Power: Class 2 4. Working Distance: 10m 5. Charging Time: Around 3.5 hours 6. Talk Time: 18...