Sports Waterproof Wireless Earphone

Brand Name: TOPK
Vocalism Principle: Dynamic
Control Button: Yes
Active Noise-Cancellation: Yes
Communication: Wireless
Volume Control: Yes
Sensitivity: 90dBdB
Wireless Type: Bluetooth
Is wireless: Yes
Line Length: Nonem
Support APP: Yes
Function: Monitor Headphone
Function: for Video Game
Function: Common Headphone
Function: For Mobile Phone
Function: HiFi Headphone
Function: Sport
Connectors: None
Model Number: L21/L22
Codecs: SBC
Support Memory Card: No
Resistance: 32ΩΩ
Waterproof: Yes
With Microphone: Yes
Color: Black
Without LED display Bluetooth name: L21
With LED display Bluetooth name: L22
Type 1: bluetooth v5.0 tws
Type 2: wireless bluetooth earphone
Earphone Features: Stereo Bass Bluetooth headset
Earphone Features 2: Waterproof Bluetooth earphone
Earphone Features 1: Sport Bluetooth headset
Support Agreement: HFP/HSP/A2DP/AVRCP
Wireless Headset Version: V5.0
Communication Distance: 10 Meters (no obstacles)
Charging Time: About 2 hours
Supporting Agreement: HEP/HSP/A2D/AVRCP
Headphone battery capacity: 50mAh
Charging box battery capacity: 300mAh