The Bluetooth 5.0 connection Bluetooth 5.0 AptX Qualcomm chipset Touching controlDustproof and Waterproof 6+18H Playback time IPX4 Dustproof and Waterproof The low-power consumption of Qualcomm chipset with AptX high-quality audio playback CVC dual-MIC of noise reduction ensure the clarity of conversation The portable charging case with long playback time up to 6+18 hours Three-frequency equalization setting balance the quality of the sound The design of Semi-in-ear assure the wearing comfortable and fit Touch control for easier music or call switch Specifications • Bluetooth Version:Bluetooth V5.0 • Support:A2DP?AVRCP • Audio decoding:aptX?SBC • Effective Distance:10m • Playback Time:Approx. 6h (Earbuds) +18h (Charging case) • Input:DC 5V 35mA(Earbuds);DC 5V 350mA(Charging case) • Frequency Response:20Hz-20KHz • Sensitivity:96dB • Impedance:28Ω Charging case user manual • Long press for 3 sec:Bluetooth pair • Double-press:TWS mode •Long press for 8 sec:Forget connection Power on:LED indicators stay white for a second • Bluetooth pair:LED indicator flashes red • TWS pair:LED indicator flashes white • Delete pair memory:LED indicator flashes for 6 sec and light off Pairing with two earbud: • Left ear: activate voice assistant • Right ear: answer/end /pause/play Pairing with one earbud: • Left ear:Double-press: answer/end/pause/play • Right ear: Double-press: answer/end/pause/play Length (cm): 10.0 Width (cm): 4.0 Height (cm): 10.0 Net Weight (kg): 0.14 Gross Weight (kg): 3.00 Pieces per box: 20