السماعات والصوتيات
The Yesido KR21 is a dual-channel 2.4GHz wireless lavalier microphone system designed for USB Type-C devices. It includes two clip-on transmitters, a plug-and-play receiver, and a portable charging case.
Key Specifications
• Connectivity and Audio. It operates on a 2.4GHz frequency with a low 25ms transmission delay. Audio is captured via an omnidirectional silicon microphone at a 48kHz / 16-bit sampling rate with -38 dBFS sensitivity.
• Chipset and Noise Control. Powered by the AI7131A + AI7187C chipset, the system features built-in AI noise reduction to minimize ambient background sounds during recording.
• Battery and Charging. Each microphone houses a 90mAh battery providing roughly 7 to 8 hours of use per 1.5-hour charge. The included 750mAh charging case recharges via USB-C (5V/1A max) and provides about two full charge cycles for the microphones.
• Receiver Interface. The receiver plugs directly into a smartphone, tablet, or computer via a Type-C connector and supports pass-through charging up to DC 5V/1.5A max.
• Build and Range. Constructed from black ABS plastic with magnetic adsorption clips, it offers a wireless operating range of up to 50 meters in clear conditions
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