MH-13 Wireless 2-in-1 Speaker Function Headphone with Microphone and RadioSpecifications: With Microphone: Yes Wireless Type: bluetooth Waterproof: No Volume Control: Yes Vocalism Principle: Dynamic Support Memory Card: Yes Style: Headphone Number Of Drivers: 2 Model: MH13 Headphone Pads Material: Memory Foam Driver Diameter: 40mm Control Button: Yes Communication: Wireless+Wired Charging Method: Batteries Certification: CE Bluetooth Version: 5. 1 Output Power: 3W * 2 Speaker: 40, 4 3W Battery Capacity: 400mAh Headphone