HX-1100 Stereo Bluetooth Neck-Mounted CSR 4.1 HD Sound Quality Waterproof Noise-Canceling Sports Earphone

HX-1100 Sports Stereo Bluetooth HX1100 Neck-mounted CSR 4.1 Waterproof Noise-Canceling Sports Earphone Hard Retail Packaging Product Description: 1. Unique neck-strap design for easy carrying 2. Ultra-light weight for all day comfort 3. Retractable Earphones 4. Noise reduction Echo cancellation 5. Bluetooth version 4.1+EDR 6. A2DP, music player support 7. Same time connect two phones 8. Calls vibration 9. Lossless sound transmission Specifications: Bluetooth version: V4.1+EDR Transmission distance: 10 meters Battery capacity: 200mAH Talk time: 7-9 hours Music time: 7-9 hours Standby time: 300 hours Charging time: 2.5 hours Speaker:16Ω10mW x 2 Sensitivity: DBM -80 Signal to noise ratio: 95dB Bearing: all directions Frequency range: 2.402GHz-2.480GHz Transmit power: 0dBm. Second (4dBm Max) Working voltage: 3.7V Working current: 20mA Color: Black, Sier, go