Professional UHF Transmitter 4,000 feet (3/4 of Mile) Transmission range in the open field Miniature UHF transmitter designed for covert surveillance operations or other operations as required pursuant to the gathering information for investigative purposes. This type of UHF transmitter is used by professionals worldwide because of its penetrating power and very clear reception. Long range and long life: Works for 6+ days Specifications: Frequency: 434.120Mhz-434.250Mhz Working Voltage: 2.1-3.5v \ 2x AA Alkaline batteries (NOT included) Current consumption:13mA Frequency: Wideband FM: Frequency range approximately: 434.120Mhz -434.250Mhz Distance: Long transmitting range, over 4000 ft. Penetrates through walls and ceilings. Power: Up to 16mW RF output. Audio: Internal microphone manufactured by KEPO: 100Hz to 10,000Hz frequency range Antenna: Flexible wire 19cm full extended. Adjustments: No adjustments are required. Works for 6 days using 2 x Duracell alkaline batteries Package Includes: UHF transmitter AA battery holder User Manual Do not use this device for any illegal purposes!!! Buyer is fully responsible for adhering to any local, State or Federal laws Purchase Today! Because this is a Professional High Quality Device (Limited Supply) Requires Radio UHF Radio Transceiver Purchase Here