Feature:1. WITH LCD SCREEN: Small radio receiver is equipped with an LCD screen that displays frequency, channel and battery level for easy operation.2. HIGHLY EFFICIENT RECEPTION: 670680Mhz receiver uses the 670680Mhz band and is capable of receiving RF signals from transmitters.3. STABLE SIGNAL: Small radio receiver antenna is designed with 1/4 wavelength to enhance signal reception.4. LIGHTWEIGHT AND PORTABLE: Radio receiver runs on 2xAA 1.5V batteries. Lightweight and portable, it can be used indoors up to 50m and outdoors over 100m.5. CLEAR SOUND EXPERIENCE: Portable radio receiver frequency response covers 20Hz18KHz, providing a clear, HiFi sound experience.Specification:Item Type: Radio ReceiverMaterial: ABSFrequency Band: 670-680Mhz Battery: 2 x AA 1.5V (Shipped Without Battery)Usage Distance: Indoor 50m / 164ft, Outdoor >100m / 328.1ftFrequency Response: 20Hz-18KHzAntenna: 1/4 Wavelength.Package List:1 x Radio Receiver1 x Earphone2 Pairs x Ear Caps