Ulanzi A21 Wireless Microphone System 2.4GHz Dual Lavalier Clip-on with USB-C Receiver and Charging Case

The Ulanzi A21 is a professional-grade wireless microphone system designed for content creators, vloggers, and remote workers. Featuring two omnidirectional lavalier transmitters and a compact USB-C receiver, it delivers crystal-clear audio up to 100 meters away. The included charging case provides extended battery life, making it ideal for long recording sessions.

Advantages

Experience true freedom with 2.4GHz digital wireless technology, offering stable transmission and low latency (<25ms). The plug-and-play USB-C receiver works seamlessly with Android smartphones, tablets, and computers, requiring no additional adapters. Each transmitter boasts up to 8 hours of battery life, while the 800mAh charging case keeps them powered on the go. The omnidirectional polar pattern captures sound evenly from all directions, perfect for interviews, presentations, and live streaming.

Suitable for

• Vloggers and YouTubers
• Podcasters and streamers
• Remote workers and online educators
• Journalists and interviewers
• Event videographers

Key specifications

• Microphone Type: Lavalier / Clip-on Condenser
• Number of Microphones: 2 (Transmitters)
• Receiver Type: USB-C Plug-in
• Wireless Technology: 2.4GHz Digital Wireless
• Operating Range: Up to 100 meters (328 feet) line-of-sight
• Microphone Battery Life: Up to 8 hours per charge
• Charging Case Battery Capacity: 800mAh
• Charging Port (Case): USB-C
• Latency: <25ms
• Signal-to-Noise Ratio (SNR): >70dB
• Frequency Response: 20Hz - 20kHz
• Compatibility: USB-C devices (Android smartphones, tablets, computers with USB-C audio input)
• Polar Pattern: Omnidirectional
• Audio Output: Mono
• Sampling Rate: 48kHz
• Bit Depth: 16-bit
• Material: ABS Plastic

Recommendations

For best results, attach the wind muffs to the transmitters when recording outdoors. Ensure the USB-C receiver is fully inserted into your device's port. The charging case can be recharged via the included USB-A to USB-C cable.