Saramonic Dual-Channel Wireless Microphone System Blink 500 B3 TX+RXD For iphone Specifications: • Transmission Type: 2.4GHz Digital Frequency • Modulation: GFSK • Operating Range: Up to 164 (50M) • RF Output Power: 10mW • Polar Pattern: Omnidirectional • Maximum SPL: Built-in Microphone:120dB SPL Lavalier Microphone: 110dB SPL • Sensitivity: Built-in Microphone: -42dB Lavalier Microphone: -30dB • SNR: >78dB • Power Requirements: Built-in Li-ion Battery or USB-C DC 5V • Frequency Response: 50Hz-18KHz Package List: 1 Blink500 RXDi Receiver with MFi Certified Apple Lightning Connector 1 Blink500 TX Transmitter with Built-In Microphone and Clip 1 SR-M1 Omnidirectional Lavalier Microphone 1 Alligator-Style Lavalier Microphone Clip 1 Foam Lavalier Windscreen 1 1 (30.5 cm) Gold-Plated USB-C to USB-A Charging Cable 1 Pairing Pin 1 Warranty Card 1 User Manual