In-ear design and ergonomic shape that fits comfortably in your ears; True Wireless Stereo sound brings perfect listening experience; Equipped with intelligent force sensor, convenient to control; Intelligent and reliable transmission with Bluetooth V5.1, transmission distance of around 10-12m Quick and simple pairing, support primary/secondary switching between left and right earbud, easy use for single or both earbuds;In-ear design and ergonomic shape that fits comfortably in your ears; True Wireless Stereo sound brings perfect listening experience; Equipped with intelligent force sensor, convenient to control; Intelligent and reliable transmission with Bluetooth V5.1, transmission distance of around 10-12m Quick and simple pairing, support primary/secondary switching between left and right earbud, easy use for single or both earbuds;