QCY QY19 Sports Headphones Bluetooth 4.1 Wireless Earbuds Noise Cancelling Earphone Waterproof QY12 / QY8 Upgraded Bluetooth 4.1, CSR8645 chip, supports APT-X lossless encoding, unbuffered, low latency, the highest rate of decoding 768KBPS, Restore CD-quality audio Built-in high sensitivity microphone, CVC6.0 digital noise reduction, support connecting two devices, multi-wire design, switch songs, adjust the volume, play pause a song, so simple Built 74mAH high quality polymer lithium battery, six-layer circuit board structure, eliminate circuit interference, effectively reducing the battery power consumption, standby time of 180 hours, 6 hours long music Through several processes optimization, reduced body size, weight only 12.7g, the internal components using excellent supplier of components to ensure the stability of the sound quality, the headset references aluminum metal exterior assembly process, Luxury More rigorous process design, water level reached IPX4, effectively prevent sweat damage components, and earmuffs with different sizes and different types,Listening to music, sports, fitness, riding a variety of scenarios, random switching, in-ear design, comfortable to wear