1、Function Description: Suitable for mobile phone with for IOS port, and external power supply can supply power to mobile phone through Type C port on the receiver, supporting charging and recording at the same time. 2、Wide Range: The farthest barrier free linear working distance is 150m/492.1ft; straight line working distance 50m/164.0ft with obstacles. 3、Interesting Effects: Has 9 kinds of sound effects, shortly press the voice effects button on the receiver to change sound effect you like, making interesting using. 4、Easy to Store: When the emitter is fully charged, it can be charged for 5 hours at a time. The drawer charging box takes 1.5 hours to charge, which is convenient for microphone storage and portable storage. 5、Powerful Tool: Supports real time monitoring of voices from microphones and mobile phones. Also easy to use, you just need to connect and pair then you can start to use. Item Type: Wireless Lavalier Microphone Material: ABS Gross Weight: Approx.245g/8.6oz Transmitter: Wireless Transmission: Digital 2.4GHz Radio Frequency Band: 2400-2483.5MHz Frequency Response: 20HZ-20khz Working Distance: 150m/492.1ft (Line Of Sight); 50m/164.0ft (Obstacle) Sampling Rate: 48KHZ Depth: 16 Bit Sensitivity: -26dB SNR: >75dB Rf Output Power: 10dB Battery Type: Built In Lithium Battery, 120mAh (Built In) Battery Charging Time: 1.5H Battery Life: 5H Transmitter Size: 49x19x19mm/1.9x0.7x0.7in Receiver: Wireless Transmission: Digital 2.4GHz Radio Frequency Band: 2400-2483.5MHz Working Distance: 150m/492.1ft (Line Of Sight); 50m/164.0ft (Obstacle) Sampling Rate: 48KHZ Depth: 16 Bit Antenna: Built In Monitoring: 3.5mm Real Time Ear Return Monitoring Power Input: Type-C Port: for IOS Port Output Receiver Size: 49x30x9mm/1.9x1.2x0.4in Wireless Charging Box: Battery Type: Built In Lithium Battery, 700mAh (Built In) Battery Charging Time: 2H Charging Port: Type-C Power Requirement: 5V 2A Charging Box Size: 70x68x38mm/2.8x2.7x1.5in 2 x Transmitter 1 x Receiver 1 x Charging Box 1 x Type C To 3.5mm Jack Cable 1 x Charging Cable 1 x Manual