Note: All data are measured manually, and there are certain errors in the measurement results. Specification: Item Type: Wireless Lavalier Microphone_x000D_Material: ABS_x000D_Transmission Mode: UHF_x000D_Frequency Range: 700?800MHz_x000D_Number of Channels: 50_x000D_Operating Range: 30?50m/32.8-54.7yd ( Depending On The Environment)_x000D_Frequency Response: 20Hz to 18KHz_x000D_Built in Battery: 2 x 400mAh Lithium Batteries_x000D_Battery Life: 6?7 Hours ( Depending On Capacity)_x000D_Charging Time: 120?150 Minutes_x000D_Cable Length: Approx. 1m/3.3ft Features: 1HIFI SOUND: Wireless lavalier microphone is omnidirectional microphone with high pickup sensitivity and intelligent noise reduction to make the sound clearer. 2UHF: Wireless lapel microphone system has 50 UHF selectable frequency adjustable to provide stable signal transmission and avoid signal interference. 3RECHARGEABLE: Both the receiver and transmitter have built in 400 mAh rechargeable lithium battery, ensuring 6?7 hours of operation time. 4LONG RANGE: Wireless lavalier lapel microphone works up to 50m/164ft (in open areas), perfect for capturing sound in large scenes. 1m/3.3ft cable, flexible in use. 5APPLICATION SCENARIOS: Wireless lavalier microphone system is widely used in live broadcast, Vlog recording, interview, show host, podcast, speech, church, wedding, etc. 6PORTABLE: The transmitter has a mini metal clip that allows you to easily clip it to your collar, tie, or pocket, making it very portable. The receiver with sound adapter can be mounted on cameras, smartphones, laptops, speakers, etc. PackageList: 1 x Receiver 1 x Transmitter 1 x 6.35Connector 1 x 3.55mmConnector 1 x InstructionManual 1 x ChargingCable 1 x StorageBag