M8 wireless bluetooth, bluetooth headset, binaural, in-ear, long standby battery life, digital display, high sound quality Feature: General functions: music play/pause, call alert, binaural call, intelligent noise reduction Three true digital display/fingerprint cool strip. In-ear type, no picking ears, no ear swelling, HiFi-grade sound quality, -friendly and comfortable to wear for a long. Bluetooth 5.2, lossless transmission. Subwoofer diaphragm speakers, stereo surround HiFi sound. Pressure control, intelligent fingerprint Parameter: Bluetooth version: 5.2 earphone capacity: 50mAh earphone usage time: 4-6 hours Charging compartment capacity: 2200mAh Transmission distance: 10-15 meters mode: fingerprint Music time: 150 hours (with the charging case) Standby time: 150 hours size:13*10.5*3.5 Product List: Charging compartment x1, Headphones x2, 3 pairs of ear caps (1 pair has been attached to the headset), Manual X1, Data cable X1