Key Features:
- Wireless Connectivity: Operates on a 2.4GHz digital wireless band, providing stable and low-latency audio transmission.
- Magnetic Attachment: The most distinctive feature. It typically includes a magnetic buckle or back clip for easy and convenient attachment to clothing without needing a traditional clip.
- Omnidirectional Pickup Pattern: Most S3 type microphones feature an omnidirectional polar pattern, meaning they pick up sound equally from all directions. This is ideal for capturing ambient sound or if the speaker moves their head.
- Noise Reduction/Cancellation: Often incorporates DSP (Digital Signal Processing) deep noise reduction technology to minimize background noise and ensure clear voice recordings, even in noisy environments. Some may offer different levels of noise reduction.
- Low Latency: Designed for low latency transmission (often around 18ms), crucial for live streaming and video recording to keep audio and video synchronized.
- Plug-and-Play Operation: Typically designed for ease of use, often with automatic pairing between the transmitter and receiver.
- Mobile Phone Compatibility: A key selling point is wide compatibility with smartphones (iOS and Android), often via a receiver that plugs directly into the phone’s charging port (Lightning for iOS, USB-C for Android). Some may also be compatible with computers.
- Rechargeable Battery: Both the microphone transmitter and receiver (if applicable) are usually powered by built-in rechargeable lithium-ion batteries.
- Charging Case (Optional): Many models come with a portable charging case that extends the overall battery life and provides convenient storage and charging on the go.
- Compact and Lightweight Design: Designed to be small, unobtrusive, and lightweight for comfortable wearing.
Typical Specifications (may vary slightly by manufacturer):
- Wireless Technology: 2.4GHz Digital Wireless
- Polar Pattern: Omnidirectional
- Frequency Response: Often in the range of 20Hz – 20KHz or similar.
- Signal-to-Noise Ratio (SNR): Can be around 65dB – 70dB or higher, indicating good clarity.
- Transmission Distance: Varies, but commonly advertised around 20 meters (65 feet) to 300 meters (984 feet) in open areas, with effective range being less with obstacles.
- Latency: Around 18ms is a common claim for low latency.
- Battery Life (Single Charge): The microphone transmitter often offers around 6-10 hours on a single charge.
- Total Battery Life (with Charging Case): If a charging case is included, the total cumulative battery life can extend to 15-30 hours.
- Charging Port: Usually USB Type-C for charging the microphone and/or charging case.
- Dimensions & Weight: Very small and light, often just a few grams. For example, a transmitter might be around .
- Connectivity to Device: Typically a receiver with a Lightning connector for iOS or a USB-C connector for Android/other devices. Some may include adapters.
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