Features: Switchable Mono/Stereo OutputThe microphone set can be switched between mono and stereo output, giving you the flexibility to select the output that best fits your recording requirements. Long Battery LifeThe built-in rechargeable lithium-ion battery offers over 5 hours of recording time, allowing you to record for prolonged periods without the concern of the battery running out in the middle of your recording. Broad Frequency ResponseThe lapel microphone system, with a frequency response ranging from 20Hz-20kHz, delivers exceptional sound quality, ensuring that every detail of your voice is captured, resulting in a natural and realistic sound. Crystal Clear AudioEquipped with 48kHz HD audio when noise cancellation is activated, the wireless lavalier microphone system guarantees your audio to be of the highest quality, free from any background noise, and crystal clear. Universal CompatibilityThe wireless microphone set, equipped with iOS Lightning digital output, is versatile and can be utilized with a variety of devices. Simple DisassemblyThe clasp on the receiver enables easy removal of the adapter, simplifying the process of setting up and dismantling the microphone set. Specifications: --Transmitter/receiver Wireless mode: 2.4G frequency reception Response frequency: 20Hz-20kHz Signal to noise ratio: -59dB Transmission delay: 15mS Sampling rate: 48KHz A depth: 24 bit Maximum transmission distance: 15-20m(barrier-free working distance);10-15m(obstacle distance) Charging input voltage: DC4.8-5.4V Microphone battery: Built-in polymer battery Built-in battery capacity: 100mAh, 3.7V Microphone working time: 5-6 hours after a full charge Microphone charging time: About 1 hour(5V/1A) Transmitter Dimensions: 5.1 * 1.5 * 1.3cm Receiver Dimension: 5.1 * 2.5 * 0.8cm --Charging Box Battery Capacity: 800 mAh Standby Time: 10 Days Charging Time: 1.5h Box Dimensions: 6.5 * 3.5 * 4.8cm Box Weight: 73g Packing List: 1 * Receiver 2 * Transmitters 1 * Type-C Cable 1 * Charging Box