high quality 2.4GHz | Adopts 2.4G wireless technology, with strong anti-interference ability and high performance; up to 30m(98ft) operation range(without obstacle).SKM-W1 | Omnidirectional lavalier microphone, Digital 2.4 GHz Frequency Band, Super-clear recording sound, Compatible with smartphones, DSLR cameras, consumer camcorders, PCs etc.Offical Warranty | 2-YEAR OFFICIAL WARRANTYWIDE APPLICATIONS | ideal for clear sound recording, suitable for interviews, audio recording, video recording, etc.PLUG&PLAY | Lightweight and compact for easy carrying, Easy to use.98ft/50m Long Transmission Range | Working distance up to 98ft and designed for reliable and trouble-free performanceWide Compatibility | Suits for DSLR Cameras (Canon/NIKON/SONY), Camcorders(PANASONIC), Smartphones(ANDROID&IPHONE)Auto-Repairing & Scanning | Used AUTO-REPAIRING function for match receiver and transmitter, make it easier to get startedBuilt-in rechargeable battery 4H | The built-in rechargeable battery of the transmitter provides up to 4 hours of run time, which helps you get a full day of audio recording.Intelligent Noise Cancellation Gives High-quality Sound | Effectively identify the original sound and can record clear sound in a noisy environment. By clicking the power button twice, you can activate the noise cancellation feature.