Brand Name: FGHGF Style: In-Ear Vocalism Principle: Dynamic Origin: CN(Origin) Control Button: Yes Active Noise-Cancellation: No Communication: Wireless Volume Control: Yes Sensitivity: 128dB Wireless Type: Bluetooth Is wireless: Yes Max Output: 1mW Line Length: 0m Support APP: No Function: For Mobile Phone Function: Sport Number Of Drivers: 2 Plug Type: None Package List: User Manual Package List: Charging case Package List: Charging Cable Package List: Replaceable Pads Set Impedance Range: up to 32 Ω Connectors: USB Model Number: B9 Earcups Type: Open-back Headphone Pads Material: Silicone Bluetooth Version: 5.0 Codecs: sbc Support Memory Card: No Driver Diameter: 6mm Resistance: 32Ω Waterproof: No Frequency Response Range: 20 - 20000Hz With Microphone: Yes Features: With Microphone Charging Method: Charging case Magnet Type: Ferrite Sensitivity: 112±3dBdB Number Of Drivers: 2 Model Number: B9 Driver Diameter: 6mm Resistance: 32ΩΩ Frequency Response Range: 20 - 20000Hz Bluetooth version: V5.0 Operation method: Touch control Caller voice prompt: Yes Wake up voice assistant: Yes Material: Metal matte + ABS Music time: 3-4 hours B9-TWS Touch control key function Click: Pause / Play Click: Accept / Reject Long press to reject the call Previous track: double click on the left ear Next track: double click on the right ear Volume +: Click the left ear 3 times Volume -: click on the right ear 3 times Voice: long press for 3 seconds Product parameters 1. Chip: V5.0 2. Effective straight line distance: 10 meters 3. Drive unit: High quality graphene speaker with a speaker diameter of 6mm. 4. Battery: polymer lithium battery, headphone 50mah full cobalt battery, charging compartment 300mah (with protection board) 5. Play time: 4 hours for one earbud and 3 hours for both earbuds. 6. Standby time: 100H for one earbud, 60H for the both earbuds 7. Fully charged time: about 70 minutes for headphones, about 2 hours for charging warehouse