Description Specifications : ★Materials: ABS PC ★Bluetooth Solution: Bluetrum5656C2 ★Bluetooth Version: V5.4 ★Bluetooth Support agreement: AVRCP,HSP,HFP,A2DP ★Transmission Distance: 10m-15m ★Earbuds Battery Capacity: 30mAh*2 ★Charging Case Battery Capacity:250mAh ★Single Playing Time: 5-6hours in normal bluetooth playing mode ★The Case of Charging Times for Earbuds: 3 times ★Driver Element: Composite membrane speaker 14.2mm ★Charging Time: 1 -1.5 hours ★Color: black/white ★Earphone Size: 44*41*12mm ★Charging case size: 90*58*22.5mm