GSM Outdoors GWP-BTN-BT: Walker\'s Razor XV 3.0 Headset features Bluetooth 5.0 which helps improve battery life, and a wide connection range. It has retractable digital ear buds, HD speakers in the ear buds for wide range audio quality, and hi-gain omnidirectional microphones. The headset also has four (4) frequency modes: Universal, Speech clarity, Hi-Frequency, and Power Boost. Included are three (3) pairs of foam tips (S/M/L) and Micro USB charging cable.