1.Bluetooth name: Lenyes Air 86 2.Bluetooth solution: Blue Message AB5656C 3.Bluetooth version: Bluetooth 5.3 4.Wireless frequency: 2.4GHz 5.Transmission distance: 10M 6.Bluetooth protocols: A2DP, AVCTP, AVDTP, AVRCP, HFP, SPP 7.Earphone battery: 30MAH (lithium battery 401010, 30mAh/3.7V * 2) 8.Charging compartment battery: 200MAH with protective plate. (Lithium ion battery 502030200mAh/3.7V) Continuous listening time: 4 hours 9.Headphone charging time: approximately 1.5 hours Charging time for the charging case: approximately 1.5 hours 10.Speaker specifications: φ 8mm speaker 11.Charging port: Type-c charging port 12.Bluetooth version 5.3, stable and smooth transmission Compact appearance, comfortable to wear High fidelity sound effects, immersive Intelligent touch, sensitive and convenient Clear voice, high-definition call High quality lithium battery, low power consumption, strong battery life"