Features: Channel scan Channel lock Automatic squelch Automatic battery save Selective channels LCD backlit Auto channel scan Page tone alert Low battery alertSpecifications: Frequency: 409-410MHZ Transmit power: 0.5W Batteries: Use 3xAAA size batteries (not included) Communication Range: 40-50 meters indoor， outdoor 100-200 meters， open area 800 m Dimension: 3.35 x 1.97 x 0.98 in (L x W x H) Shell Material: High-quality plasticPackage Include: 2 x Handheld Two-way Radio Walkie Talkie