Brand Name: olaf Material: Plastic Communication: Wired Resistance: 16 Line Length: 1.2 Connectors: Type c Style: In-ear Frequency Response Range: 20 - 20000 Is wireless: No Vocalism Principle: Dynamic Origin: Mainland China Active Noise-Cancellation: No With Microphone: Yes Wireless Type: Bluetooth Headphone Pads Material: Silicone Function: Common Headphone Function: For Mobile Phone Features: Waterproof Features: With microphone Impedance Range: up to 32 Ω Control Button: Yes Volume Control: Yes Category: Earphones & Headphones Choice: yes semi_Choice: yes