Product name: wireless headset Product model: K20 Product weight: about 12 grams Product color: business black Bluetooth version: Bluetooth-compatible 5.0 transmission Bluetooth distance: about 10 meters distance Standby time: about 380 hours Talk time: about 20 hours Music time: about 18 hours Bluetooth protocol: HDP/A2DP/HSP/AVRCP Specifications: 1. Open listening to the liberation of both ears, the use of ear clip design, innovative health and comfort design concept, without the ear, do not pick the ear size 2. Strenuous exercise can not be thrown off, according to the ergonomic design of the body, optimize the weight of the headset, no need to worry about the headset off, shaking, moving 3. Ultra-light body, no sense of wearing, no sense of falling ears, no sense of restraint 4. High-quality sound quality, HIFI surging stereo sound, the second generation of acoustic cavity digital enhancement technology, like being in a concert scene, immersive package feeling, all-round acoustic structure 5. High-definition calls, such as face-to-face conversations, using double noise reduction, sponge noise cancellation technology, automatic recognition of human voice and noise, improve clarity, and call like face-to-face Package Included: 1 * wireless headset 1*date line