Brand Name: HIPERDEAL Vocalism Principle: Dynamic Control Button: Yes Active Noise-Cancellation: Yes Communication: Wireless Volume Control: Yes Style: Ear Hook Sensitivity: 120dBdB Wireless Type: Bluetooth Is wireless: Yes Line Length: Nonem Support APP: No Function: Sport Function: For Mobile Phone Connectors: None Model Number: L21 Support Memory Card: No Resistance: 32ΩΩ Waterproof: No With Microphone: Yes