Battery Model： CR2032 x 4 for receivers ( NOT included )AAA1.5V x 2 for transmitter (NOT included )Working distance: 30~40 M in open areaLED torch function included.Package Includes;1 x transmitter4 x receivers1 x dock base1 x Operation manual
Battery Model： CR2032 x 4 for receivers ( NOT included )AAA1.5V x 2 for transmitter (NOT included )Working distance: 30~40 M in open areaLED torch function included.Package Includes;1 x transmitter4 x receivers1 x dock base1 x Operation manual