Features 1.Plug and Play: Wireless universal dynamic microphone automatically connects to wireless devices when you turn on the phone, computer, and amplifier are all compatible. 2.V Band Fixed Frequency Point: Cordless dynamic mic system's signal transmission is stable and free from interference, solving your multiple troubles at once. 3.Long Range Reception: Wireless microphone is free from wired constraints, allowing more freedom of speech, and ideally, the reception distance is up to 50 meters. 4.Ergonomic Design: Ergonomic design and streamlined R?edge processing make you have a comfortable grip when singing and present a beautiful sound. 5.Professional Dynamic Microphone Core: Dynamic Karaoke mic system largely restores the human voice, filter cotton can filter out noise, so that the output sound is clear and pleasant. specificationItem Type: Wireless Microphone Material: ABS Microphone Size: Approx. 52 x 254mm/2.0 x 10.0in Receiver Size: Approx. 225 x 35mm/8.9 x 1.4in Pickup Category: Moving Coil Type Modulation Mode: Fixed Frequency Preset Frequency: Automatic Pairing Carrier Frequency Range: 700-800MHz (Depending on the Range of Countries Used) Effective Reception Range: 50m/164ft (Ideal Environment) Microphone Battery s: 2 x 18650 (not Included) Receiver Battery s: 1 x 18650 (not Included) PackageList 2 xWirelessMicrophones 2 x Windproof Cotton 1 x Receiver 1 x Instruction Manual 1 x Charging Cable 2 x Anti Roll Ring 1 x Adaptor NotePlease allow some errors due to manual measurement.