BT05 Neckband Wireless Headphones with Mic, Bluetooth 4.1 Music Stereo Running Neckband Style Headset Grey

Specifications: Diameter: 10mm Bluetooth version: 4.1 (CSR8635) Frequency response range: 20-20kHz Battery: 100mAh Transmission distance: 10M Impedance: 16? Listen to music time: 7.5h Charging time: 1h Talk duration: 7h Standby: 380h Features: Compatible with Advanced Bluetooth Version 4.1 System Cellphones, devices providing the Bluetooth Headset. Built-in magnet attracts the earplugs when you do not need them, greatly decreasing the burden on ears and giving you a convenient storage way to carry around. Featuring with an unique neck-strap and Ultra light weight designed specially for easy carrying for all day comfort. Powerful rechargeable battery provides up to 7.5 hours of continuous talking/music time and 380 hours of standby with a single charge.