Edifier TWS1 PRO IVORY Bluetooth Wireless Earbuds, Active Noise Cancelling, Long Battery Life, Quick Charge USB-C, IP65 Dust Proof and Water Resistant Qualcomm® TrueWireless™ Mirroring technology Qualcomm® aptX™ Adaptive Qualcomm® cVc™ 8.0 noise cancellation High-quality PU + titanium diaphragm Up to 12 hours continuous playback 42 hours playtime with a 40-minute quick charge Volume control supported Bluetooth version: V5.2 Bluetooth Protocol: A2DP,AVRCP,HFP Playback time: about 12 hours (earbuds) + 30 hours (charging case) Charging time: about 1.5 hours (earbuds); about 40min (charging case) Battery capacity: 60mAh (earbuds)/500mAh (charging case) Frequency response: 20Hz-20kHz Sound pressure level: 95±3dB Impedance: 16Ω Charging port: USB Type-C Audio Coding: aptX, SBC IP Rating: IP65 Effective Distance: 10m Product Weight 45g (net Weight) Inner Carton 98.5mm x 46.5mm x 100mm (LxWxH), 162g (gross weight)