Specifications:

• Work time: about 3-4 hours
• With Microphone: Yes
• Wireless Type: bluetooth
• Waterproof: Yes
• Volume Control: No
• Vocalism Principle: Dynamic
• Support Memory Card: No
• Support APP: No
• size of earbud: 17mm/3.7g,ultra small size
• Sensitivity: 123dBdB
• Resistance: 30ΩΩ
• Model Number: SQRMINI-X20 Ultra small mini hidden bluetooth earbud
• Is wireless: Yes
• Function: Sport
• Function: HiFi Headphone
• Function: For Mobile Phone
• Function: Common Headphone
• Control Button: Yes
• Connectors: None
• color: white,black,skin color
• charge time: in 1hours
• Brand Name: Nisheng
• bluetooth version: V4.2
• battery: earbud:55mAh,charge case:220mAh
• Active Noise-Cancellation: No
• Communication: wireless
• Origin: CN(Origin)
• Package List: Charging case
• Charging Method: Charging case
• Earcups Type: Sealed
• Package List: Replaceable Pads Set
• Plug Type: Line Type
• Frequency Response Range: 20 - 20000Hz
• Style: In-ear
• Magnet Type: Neodymium
• Impedance Range: up to 32 Ω
• Codecs: sbc
• Features: With Microphone
• Headphone Pads Material: Other
• Bluetooth Version: 4.2
• Driver Diameter: 8mm
• Total Harmonic Distortion: 1<1%%
• Line Length: 0Nonem
• Package List: Charging Cable
• Certification: NONE
• Package List: User Manual
• Number Of Drivers: 1