electronic gadgets T-669A Product details: Compact handheld walkie talkie. Professional design, beautiful appearance, legerity, useful and easy to operate. Main Features: High sensitivity radio function Multifunction Scan PC/manual program frequency, self-machine program Flashlight function at light Matching transfer High capacity lithium battery General specification Frequency Range (UHF) 400-470 MHz Power 5W Channel No. 100 Operating Temperature -20 to +50 Operating voltage DC:7.4V(Li-ion 1500mAh) Antenna Impedance 50¦¸ Dimension 90*50*30mm (exclude antenna) Weight( with battery) About 217g Transmitting Part Receiving Part frequency stability: ¡À2.5ppm REF sensitivity: