Feature 1.AAC, apt-X, DSP, NFC supported bluetooth headsets. 2.Private tool growing headphone bluetooth at alibaba express. 3.Rechargable headphone bluetooth. 4.Slim mini and portable design. 5.Multicolor in ear bluetooth headphone . 6.shenzhen headsets OEM factory water proof design . 7.Long life music time stereo headphone bluetooth. 8.high quality bluetooth earbuds. Description Brand Name: ODM Style: In-Ear Communication: Wireless Connectors: USB Use: Portable Media Player Function: Bluetooth, Microphone, Noise Cancelling, Waterproof Place of Origin: Guangdong, China (Mainland) Color: Black, Blue, Red, Yellow Certificate of Headphone Bluetooth: CE FCC ROHS Battery of Headphone Bluetooth:3.7V/60mA/h lithium-ion battery Transmission Distance: 10m/30feet Usage of Headphone Bluetooth:Mp3/Mobile Phone/PC/Sumsang/HTC/iPhone Standby Time: Up to 100hours Charging Time: Less than 2.5 hours Operating frequency range: 2.40GHz-2.48GHz Bluetooth V4.1,cheapset csr 8645 Fashion flat line design headphone bluetooth. support the music format of APT-X Range of wireless connection: 10-15 meters Talk time:8 hours; Stand-by time: 20days Ultrasonic technology headphone bluetooth Adopt 2 Knowles silicion microphone to reduce the noise 170 High TG PCB boards, design of hidden hole 24 bit high precision detective IC ESD Static design 4 LED lights indication Using 32© speaker