Bluetooth 5.3 Wireless Earbuds with Wireless Charging Case IPX8 Waterproof Stereo Headphones in Ear Built in Mic Headset Premium Sound with Deep Bass for Sport

Product parameters: Item Type: Headphone Material: ABS Color: pink, blue, green (optional) BT version: V5.0 BT distance: 10m Charging time: 1-2 hours Music time: 3 hours Talk time: 4 hours Audio transmission format: HFP/A2DP/HSP/AVRCP Headphone battery: polymer lithium battery 45mAh Charging box battery: polymer lithium battery 280mAh Working voltage: 3.2-4.2V Charging voltage: DC5V Frequency: 2.4-2.48GHz Speaker impedance: 32? Speaker bandwidth: 20-20KHz Speaker sensitivity: 105dB Microphone sensitivity: -42+/-2db Packing size: 145*80*35mm/5.7*3.14*1.37inches The package includes: 1xBluetooth headset (left and right ears) 1xCharging box 1xUSB charging cable