Features: 1 Second Automatic Connection, Plug and Play: no need for tedious settings, automatic pairing, no APP required. Small Size, Large Battery Capacity: he built-in 120mah battery can work continuously for more than 10 hours, and with the built-in 780mah battery in the charging compartment, it can achieve ultra-long battery life. 360° High-definition Surround Pickup: high sensitivity capacitive microphone, 360° non dead angle recording of sound, delicate recording of sound in front, back, left, right, and clear recording of every sound detail. Continuous Frequency Transmission Over a Distance of 20 Meters: built in optimized antenna design, stable signal can be maintained over long distances. Compatible with Various Devices: it can be used with mobile phones/computers/cameras for the occasions of online live streaming, video vlog , recording, video teaching, and more. Specifications: Type: 1 Transmitter, 1 Receiver / 2 Transmitters, 1 Receiver (Optional) Material: ABS Pickup: Capacitive Interface: Type-C Signal to Noise Ratio: ≥70dB Frequency Range: 40Hz-20kHz Battery Capacity: 780mAh(charging box), 120mAh(mic) Transmitter Size: 68 * 21 * 13mm / 2.68 * 0.83 * 0.51in Receiver Size: 45 * 25 * 8mm / 1.77 * 0.98 * 0.31in Item Weight: 64g / 2.28oz, 94g / 3.32oz Package Weight: 143g / 5.04oz, 179g / 6.34oz Package Size: 13.7 * 11.2 * 4cm / 4.39 * 4.41 * 1.57in Package List: 1/2 * Transmitter (Options) 1 * Receiver 1 * Charging Box 1 * Type-C Cable 1 * iOS Converter 1 * Manual (English)