Features: 2.4G Digital Audio Transmission: Highly resistant against interference, effective transmission range is up to 50M in open area; suitable for DSLR camera/ smartphone live broadcast, vlog, recording, interview, etc. Omni-directional Condenser Microphone: Built-in high-sensitivity condenser mic with intelligent noise cancellation for clear audio recording; users can clip the transmitter onto collar to use the internal mic directly, or connect the external lavalier mic for flexible recording. Instant Pairing & Supports Output Level Control: Auto pairing within 2s when both transmitter and receiver are on; users can adjust the output level according to different recording devices, preventing distortion and ensuring quality. Smart Power-off for Longer Endurance: Built-in battery in both receiver and transmitter, supports 5hrs of continuous use after fully charged; auto shutdown after 8min idleness when not connected, energy-conserving. With Practical Accessories: With a high-grade travel case for easy outdoor carrying, a windscreen to reduce wind noise in strong wind conditions, a 3.5mm TRS audio cable and a 3.5mm TRRS audio cable for camera or smartphone connection. Specifications: Brand: TAKSTAR Model: V1 --Overall Specifications Transmission Frequency Band: 2400MHz-2483.5MHz Audio Frequency Response: 100Hz-16KHz3dB Dynamic Range: 87dB (circuit performance) S/N Ratio: 85dB (circuit performance) Peak Input SPL: 97dB SPL (built-in mic) Pairing Method: automatic Effective Working Range: 20m (with obstacles); 50m (open area) --Receiver Transmission Type: frequency hopping / digital FSK Receiving Sensitivity: -86dBm Battery Type: lithium-polymer battery Charging Interface: USB 5V Battery Life: approx. 8hrs Output Interface: 3.5mm TRS Dimensions: 50mm * 44.5mm * 15mm Net Weight: approx. 30g --Transmitter Modulation Type: frequency hopping / digital FSK Transmit Power: 10dBm Mic Polar Pattern: omnidirectional Battery Type: lithium-polymer battery Charging Interface: USB 5V Battery Life: approx. 5hrs Output Interface: 3.5mm TRS Dimensions: 50mm * 44.5mm * 15mm Net Weight: approx. 30g Packing List: 1 * Transmitter 1 * Receiver 1 * USB Charging Cable 2 * 3.5mm Audio Cables 1 * Windscreen 1 * Users Manual(English & Chinese)