Victake Bluetooth Headphones, Noise Isolating Wireless Headset with Microphone-High Quality Stereo Sound-CSR V4.0 Chip-Sleek Custom Earbuds, Light-Weight Design For Android IOS Mobile Phones Operating Range: Working distance range: 10 meters (33ft) Power Supply: Battery: rechargeable lithium polymer battery Weight: 1.5 Specifications: Specifications: Bluetooth version: v4.0 Working distance range: 10 meters (33ft) Support A2DP/AVRCP protocols. Battery: rechargeable lithium polymer battery Talk/playing time: Up to 5 hours Charging Time: 2 hours Package Included: 1* Bluetooth earphones 1* Micro USB Charging Cable 3* Earbuds 2* Ear hooks 1* User Manual Features: 1. Bluetooth 4.0 Technology. Compatible with A2DP and AVRCP Bluetooth profile, it is easy and fast to pair with smart phones, tablets and other Bluetooth enabled music devices. The working distance is about 10 meters. 2. Long Battery Life. Built-in high capacity rechargeable lithium polymer battery, this wireless earphones only needs about 2 hours to be fully ch...