ITEM NAME:A6S Mini Headset Bluetooth 5.0 Earphone Stereo Earbuds In-Ear with Charging K2P6 Specifications: Color: Black Bluetooth Version: V5.0 Bluetooth Distance: 10m Charging Time: about 1-2 hours Standby Time: about 80 hours Music Time: about 3 hours Talking Time: about 4 hours Audio transmission format: HFP/A2DP/HSP/AVRCP Earphone Battery: Polymer Lithium Battery 45mAh Battery Box Battery: Polymer Lithium Battery 280mAh Working Voltage: 3.2 - 4.2V Charging Voltage: DC5V Frequency: 2.4-2.48GHz Horn impedance: 32ÃŽ © Horn Bandwidth: 20-20KHz Horn Sensitivity: 105dB Microphone Sensitivity: -42 +/-2db Package Size: 103 x 103 x 35mm / 4.1 x 4.1 x 1.4 inch Package Weight: 110g Package Included: 1 x A6S Mini TWS Bluetooth Earphones (left and right ears) 1 x 280mAh Charging Box 1 x USB Charging Cable 1 x User Manual 4 x Ear cap.1 x A6S Mini TWS Bluetooth Earphones (left and right ears). Bluetooth Version: V5.0. Bluetooth Distance: 10m. Microphone Sensitivity: -42 +/-2db. 4 x Ear cap. 1 x USB Charging Cable. 1 x 280mAh Charging Box.