The Walker's Silencer BT 2.0 Electronic Ear Buds features Bluetooth 5.0 which improves battery life and wide connection range. It has touch button controls, SAC (sound activated compression), voice prompts, and auto shut off. The unit includes a USB charging dock with integarted lithium battery, three sizes of Sure-Lock fins and foam tips, cleaning brush, Mirco USB cable, and four listening modes: universal, speech clairty, hi-frequency, and power boost.