As heavy duty walkie talkies, Retevis RB48 is fully ruggedized to withstand shock, humidity, water or dust ingress, and other challenges. Features: IP67 waterproof and dustproof, 2 meters drop-proof, 38CTCSS /83DCS, VOX function, vibration reminder, emergency alarm, NOAA, call tone, battery save, Key-Lock, key beep, low battery alert, roger beep, TOT, voice announcements, squelch, LED backlight display, battery Indicator. Package includes: RB48 two way radio(Li-ion battery) x6, lanyard x6, belt clip x6, Six-Way Charger x1, DC Adapter x1, AC Adapter x1, user manual x2, Acoustic tube walkie talkie earpiece x6