Baofeng BF-1904 high power long range 10km walkie talkie UHF  cheap ham radio handheld transceiver 

FEATURES of talkie walkie :

General
Output power:12W
Frequency Range: UHF:400-520MHz
Memory Channel: 16
Operating Voltage DC7.4V
Frequency Stability ±2.5ppm
Operating Temperature -20~+60ºC
Antenna Impedance 50Ω
Demission 130*57*37mm(no including the antenna)
Weight About 230g(include in battery and antenna)
Battery capacity:3800mah