?Long Battery Life?The 7RYMS iRay DW20 lapel mic is equipped with a built-in lithium battery, providing up to 6 hours of standby time. A 3-in-1 USB C charging cable is included for convenient charging, and the wireless mic can also be used while charging in case of emergencies. ?One-Click Muting & Real-Time Monitoring?The convenient one-click switch allows you to mute the wireless microphone temporarily for teamwork pauses or handling on-site streaming/recording emergencies. The receiver features a 3.5mm headphone jack for real-time monitoring of recording status during shooting. ?328FT Wireless Transmission Range?With secure 2.4GHz digital transmission and Syncoder Tech, the DW20 wireless microphone offers a remarkable transmission range of up to 328ft/100m (in open areas). The sound delay is less than 20ms, ensuring near-perfect synchronization with video footage. ?Wide Compatibility?The wireless lapel mic is compatible with DSLR cameras using the included 3.5mm TRS-to-TRS adapter, and with computers or smartphones using a 3.5mm TRS-to-TRRS cable (Note: 3.5mm TRS-Lightning/USB-C cable not included). ?Auto-Pairing & 48kHz/16bit Recording?Experience reliable and trouble-free performance with the DW20 wireless microphone. Our frequencies are government frequency conflict-free for safe usage. It supports automatic connection between the transmitter and receiver upon power on. Equipped with a DSP chip, it delivers exceptional sound quality with a high sampling rate of 48kHz/16bit, ensuring crystal-clear and distortion-free audio for your live streaming, recording, interviewing, teaching sessions. ?Mono/Stereo and Safety Output Mode? 7RYMS iRay DW20 wireless lavalier microphone offers the flexibility to switch between mono, stereo, or safety output modes. The mono/stereo mode is perfect for post-production and caters to different scenarios, while the safety mode provides a backup audio recording at -6dB to prevent distorted or invalid recordings. (Please note: smartphones do not support stereo audio output).