Product Name: Saramonic BLINK500B2+ Wireless Lavalier Microphone for iPhone Android Type-C Smartphones and Cameras Retail Price: 25,000 yen New, Unused. Immediate purchase OK. The following is a product description. [Product Description] [Ideal Wireless Microphone System] An extremely easy-to-use 2-person wireless clip-on microphone system, perfect for content creation, interviews, video blogging, mobile journalism, live streaming, podcasts, virtual meetings, and more. [Powerful Transmitters] Two clip-on transmitters with built-in omnidirectional microphones, two-stage noise cancellation for ultra-clean audio, 17-step remote gain control, furry windscreens, mute, and magnetic mounts. [Universal Compatibility] 3.5mm TRS and TRRS, USB-C, and Lightning outputs connect to cameras, iPhones, iPads, Android devices, computers, action cameras, recorders, and any device with an audio input. [Feature-Packed Receiver] Ultra-lightweight and compact 2-channel receiver with OLED display, mono/stereo/safety output settings, 75/150Hz low-cut filter, headphone output, and mobile device speaker activation. [Long Range and Power] Up to 492.1 feet (150 meters) range, transmitters provide 20 hours and receivers provide 16 hours of excellent operating time with auto on/off function. The 1250mAh charging case allows for 1.6 times the system charge. Communication Method: 2.4GHz digital frequency Modulation Method: GFSK Directivity: Omnidirectional Operating Range: Up to approximately 150m (line of sight) Frequency Response: 20Hz-20kHz Sensitivity: -32dB±3dB (1V/Pa) Audio S/N: >80dB Audio Distortion: <0.10% Audio Input: Built-in microphone Charging Method: Built-in lithium-ion battery/Charging terminal/USB-C charging port (DC 5V) Operating Time: Approximately 20 hours Charging Time: Approximately 2 hours Weight: Approximately 23g External Dimensions: 45mm x 31.6mm x 13mm