Brand Name: DODOCASE Style: Ear Hook Certification: RoHS Vocalism Principle: Dynamic Origin: CN(Origin) Control Button: Yes Active Noise-Cancellation: Yes Communication: wireless Volume Control: Yes Sensitivity: 100dB Wireless Type: bluetooth Is wireless: Yes Max Output: 2mW Line Length: 0m Support APP: No Function: For Internet Bar Function: Monitor Headphone Function: for Video Game Function: Common Headphone Function: For Mobile Phone Function: HiFi Headphone Function: Sport Number Of Drivers: 2 Plug Type: Line Type 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: F9-4 Earcups Type: Semi-open Headphone Pads Material: Silicone Bluetooth Version: 5.0 Codecs: AAC Support Memory Card: No Driver Diameter: 8mm Resistance: 32Ω Waterproof: Yes Frequency Response Range: 20 - 20000Hz Total Harmonic Distortion: 1% With Microphone: Yes Features: waterproof Charging Method: Charging case Magnet Type: Other Sensitivity: 95dB Max Output: 1mW Line Length: 0m Number Of Drivers: 2 Model Number: Bluetooth Wireless Earphones Driver Diameter: 10mm Frequency Response Range: 20 - 20000Hz Total Harmonic Distortion: 1% Earphone battery: 50mAh for headphone Charging box bettery: 2000mAh Work time: 2.5-3 hours/times Compatible with: for Windows,Android and IOS Suitable: for Xiaomi Huawei LG Samsung phone iphone most of phone Feature01: with charger case 2000mah,automatically pair Feature02: Left and right earphone can be used seperately Feature03: Automatically boot when take out of charging box Service: Retail/Wholesale/Drop-shpping/mix order Feature04: Bluetooth Earphone Feature05: Wireless Earphone Feature06: Bluetooth Headphone Feature07: Wireless Headphone Feature08: Bluetooth Headset Feature09: Wireless Headset Feature10: Wireless bluetooth earphone Feature11: TWS wireless Earbuds Feature12: Wireless Bluetooth Headphone