Only 3 controls makes this unit very simple to use Meets US Military standards MIL-810C D & E for shock & vibration Lightweight & easy to carry Hundreds of applications The IC-F22SR offers maximum flexibility & instant communication between members of a group in & around bulidings & over short distances. This makes it an ideal tool for a high number of users involved in construction catering event management neighbourhood watch factories farms as well as walking or rambling. Simplicity is the key behind the design of this new transceiver so users will require little training. There are only three controls transmit button volume control & channel selector. This simple interface makes it absolutely ideal for shift work where the radio is constantly passed from person to person. The IC-F22SR is extremely lightweight & easy to carry. With a slim-line curved casing the transceiver fits comfortably in the h&. Durability has been built-in as the new model meets tough US Military standards MIL-810C D E for shock & vibration. These factors combine to provide high reliability even in the toughest environments. The IC-F22SR delivers all 8 new UHF channels & a built-in CTCSS signalling capability allows for more privacy in conversation. Channel searching is easy for the user because the radio automatically does it for you The IC-F22SR has an auto-channel selection function to find a free channel. The radio also has a group call function that allows exclusive groups to use the equipment without interference from each other. A ringer function gains the users attention which adds a spot of familiarity for the first time users & a Smart Ring function lets you know whether the recipient has received your call. Each radio is supplied with rechargeable battery drop-in charger belt clip & comprehensive handbook.