Quoted from the website: Product Name: TRUTH Wireless Earphones Model Number: AH-TWS06HD Bluetooth Version: V5.3 Supported Profiles: HFP/HSP/A2DP/AVRCP Earphone Battery Capacity: 35mAh x 2 Case Battery Capacity: 300mAh Impedance: 32Ω Driver Unit: 10mm Frequency Response: 20Hz - 20000Hz Sound Pressure Level: 107±3dB Quick Charge: 1 hour of playback with a 10-minute charge Earphone Charging Time: 1.5 hours Case Charging Time: 2 hours Codecs: AAC/SBC Continuous Playback Time (50% volume): 7 hours Continuous Talk Time (50% volume): 6 hours Quick Charge: 1 hour of playback with a 10-minute charge Maximum Speaker Input: 5mW Number of Charges: 2.5 times Continuous Standby Time: 300 hours Accessories: Ear tips (S, M, L), Type-C charging cable Please be sure to check the profile before purchasing.