Bluetooth 5.4 Touch In-Ear Earphones Earhook Earbuds Sports Earphones 1: Bluetooth 5.4 technology, stable transmission, low latency 2: 120° adaptive rotating silica gel adopts Q elastic silica gel material design, painless for a long time, and stable. 3: Multi-function touch area: Say goodbye to tedious steps, a finger instant touch control 4: Single ear 50mah, charging box 500mah, a single full charge can play music for 8 hours, the charging box can provide 4 charges, a total battery life of 40 hours Touch function 1.Click on the earphone touch area:play/pause 2.Double-clicktheearphone touch area: pull-back .