Description Features of Ulanzi J12: Additional Microphone for Wider Use: Support dual-microphone simultaneous recording. Suitable for Living streaming, V-log, Interviews, Short Videos, Mukbang, etc. Adopt an omnidirectional condenser microphone, 360° surround sound pickup, and better spatial sense Built-in intelligent denoise module can effectively filter out the noise, high fidelity sound quality 65ft Wireless Receiving No APP is needed. Plug in the receiver on the phone to connect automatically Long-lasting Charging Case: Using wireless earbud type box design, easy to store, lightweight and portable Tips: There may be some cell phones such as can not use, please try to open OTG, such as OPPO and VIVO. The general way to open OTG: search OTG in the phone settings to open. Incompatible phone models: Samsung S8, S9, S20, Google Specifications: Color: Black or white Product weight: 69g Product material: ABS Transmission distance: 20m/65ft Sound delay: ≤25ms Headphone monitoring: Support Transmitter battery capacity: 80mAh Rechargeable case battery capacity: 800mAh Adapter: 5V/1A