BF-888S UHF 400-470mhz Walkie Talkie ​Handheld Two-way Radio

emergency alarm intelligent charging battery save low voltage alert flashlight 16 channel 1500mah li-ion battery 50 ctcss/105 cdcss vox function voice prompt pc programming frequency range uhf 400-470mhz rf rated power ≤ 5w channel capacity 16 channel spacing 25khz operated voltage 3.7 v battery 1500mah li-ion battery life about 8 hours frequency stability ±2.5ppm operated temperature -30°c-+60°c antenna impedance 50ω dimensions (l×w×h) (with battery, without antenna) 110×50×32 mm weight (with battery/antenna) 198g communication range about 2-4km transmitter rf power output 3w modulation f3e spurious emission ≤65db fm noise ≤-45db(w) ≤-40db (n) audio distortion ≤5% transmitting current ≤1.3a receiver sensitivity (12db sinad) ≤0.20 uv selectivity 55db/50db intermodulation ≥65db adjacent channel selectivity ≥60db