Feature: 1.Frequency Band: UHF(400-470MHz). 25 Channels 2. Normalmode: 38 CTCSS+61 CDCSS. Professional mode:50 CTCSS+105 CDCSS 3. PC programmable. Power saving function 4.Ban on busy. Could work with other walkie talkies(the same channels and frequency) Specification: Channel:25 Working Temperature:-20C ~ 60C Standard Voltage:3.7V Battery Capacity:280 mAh Channel Spacing:12.5 K/25KHZ SIZE(excluding antenna):53mm x 21.5mm x 15mm( no Back buckle) Weight:17 g (no earpiece) Antenna Impedance:50Q Transmitting Part: Freq Stability:2.5 Output power: Less than 0.5W Modulation:F3E Residual FM: Less than -35dB Audio Distortion: Less than 3% Receiving Part: Sensitivity: Less than -121dBm Adjacent selectivity: 70 dB Intermodulation: 70 dB immunity ratio:48 dB Audio Distortion:S3% Material: ABS colour: black Package Contents: 1 x Mini Wlkie Taklkie 1 x Charger 1 x USB cable 1 pair x Headset Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.