Transmission range 15 meters Function battery display, call function, voice control, support music, multi-point connection Bluetooth Protocol 5.0 channel stereo Contact me to see pictures or remarks Our company has always been adhering to the purpose of "striving for perfection and perseverance" for products, creating more benefits for more future partners and old customers, and achieving the goal of win-win cooperation! We will ship the goods as soon as possible after you place the order. Welcome to place your order. Please contact us if you have any questions..syi