Product Description: Adopt cvc8.0 digital noise reduction technology The latest twina binaural bluetooth earphones use a 5.3 chip to give you very efficient wireless performance. 5.3 Chip manages battery to increase lifespan Using Bluetooth v5.3 chip, 10m connection distance, stable performance, high transmission, low power consumption, and strong compatibility. Ergonomically designed for a comfortable fit to the auricle IPX7 waterproof and sweatproof exercise without sweating Binaural separation project Single ear and binaural switch freely Subvert the traditional host to connect the secondary headset and the dual host. The ear canal is freely accessible to both left and right ears. Strong compatibility, universal for ios/android, one-key control, super high quality. Bluetooth version: 5.3 Noise reduction version: cvc8.0 Frequency range: 2402mhz ~ 2500mhz Working distance: 10m Charging input voltage and current: 5v Headphone battery capacity: 45mah Charging compartment battery capacity: 800mah Play time : 4~5 hours Recharge : 8~10 times , total 45 hours Specification: Latest Bluetooth 5.3 technology Designed for sports, made for music, to make your life better. Products include: 1 * Pair of wireless earphones (left and right) 1 * Charging case 1 * charging cable 1 * User Manual