1Full compatibility: This wireless handheld microphone receiver has a 6.35 mm (1/4 inch) output that you can connect to any sound system such as PA, mixer, speaker, amplifier and karaoke machine with 6.35 mm ( 1/4inch) microphone input. 2Wirelessly transfer your vocals to the sound system. If your audio system is a 3.5mm microphone input, use the included 3.5mm to 6.35mm adapter. The volume will be adjusted from the audio device side, so make sure your audio device has a microphone volume control. 3Stage sound quality: high quality sound transmission, clear sound and no feedback, no distortion. This handheld wireless microphone is designed for live performance, sound reinforcement and studio recording. 4Easy to set up: Plug and play, no application or configuration, easy to use. A battery-powered microphone (2 AA batteries) and a wireless mini receiver (rechargeable lithium battery) provide great freedom of movement on the stage or in the room. 5This microphone can be used in different situations, such as perfect karaoke parties, DJs, wedding hosts, churches, business meetings, classroom activities, outdoor or stage performances. It can also be used to help your smartphone, tablet, laptop for recording. Modulation Mode: Digital Frequency Modulation Frequency Range: UHF 500~980MHz Preset Frequencies: 8 (auto paring) Frequency Response: 75Hz~18kHz3dB Max. Deviation Range: 50kHz (with level limiting) T.H.D.: 98dB Working Range Use Distance: Up to 50m / 164ft RF Carrier Stability: 0.005% (-10 - 50C) Micro Receiver: Power Supply: Built-in Li-on rechargeable battery (500mA) Power Consumption: 80mA Battery Life: Up to 6 hrs Recharging Time: About 1 hour (5V/1A) Handheld Microphone: Transmitting Power: 30mw Working Time: Up to 10 hrs border: .5pt solid000;};border: 1px solid000important;}1 x Microphone1 x Receiver1 x USB Cable1 x Anti-Spray Sponge Cover1 x Silicone Ring1 x Instruction Manual