J80 Broadcasting Lavalier Mini Microphone (2 Microphones+1 Receiver) - For iPhone 2.4G wireless transmission,with unlimited transmission distance up to 20 meters,low data transmission delay,indoor and outdoor unrestricted Plug and pay. Just plug the receiver into your cell phone,the wireless microphone will be automatically paired and start working The wireless microphone is small and lightweight,can be easily put into pockets,handbags,briefcases and so on Adopting noise reduction chip,filtering excess noises,vocals are clearer,you can record clearly even in noisy environments With a 600mAh battery charging bin,convenient to charge your microphone on the go Specifications: Microphone: digital silicone mic Input voltage: 5V Battery capacity: microphone: 70mAh (2pcs=140mAh); charging bin: 600mAh Working time: about 6h Signal-to-noise ratio: 64DBM adaptive noise reduction Transmission delay: 30MS Sensitivity: -42DB Frequency response range: 20-20KHZ Transmission distance: 20m (without obstacles) Package included: 2 x Microphones 1 x Receiver 1 x Charging Bin 1 x English User Manual 1 x Charging Cable Other items not included