High-Sensitivity PU Composite Diaphragm Speaker Equipped with PU composite diaphragm speakers, these earbuds deliver high sensitivity and low distortion, providing deep, full-bodied bass and richly detailed sound for an immersive listening experience Upgraded Bluetooth V5.4 Chip Module With the latest Bluetooth V5.4 chip, enjoy faster, more stable, and seamless transmission, ensuring smooth music and calls wherever you are Precision Capacitive Touch Controls The earbuds feature precise capacitive touch controls, allowing you to easily skip songs, take calls, and activate your voice assistant Comfortable and Secure Ear-Hook Design The open-ear, hook-style design ensures a comfortable, stable fit that wont slip, making these earphones ideal for sports, workouts, etc. HD Digital Battery Display on Charging Case The charging case includes an HD digital display, keeping you informed of the remaining battery life at a glance Specifications Bluetooth chip BLUETRUM 5656 Bluetooth version 5.4 Bluetooth protocols HFP, HSP, A2DP, AVRCP Transmission distance 10m Battery capacity charging case 300mAh Battery capacity single earphone 40mAh Music playback time 5H Talk time 4H Earphone charging time lt1H Charging interface Type-C Material ABS