The bf-88s is a license-free radio which you can use right out of the box. portable and convenient size, easy to operate. it provides higher safety and operational performance: better-talking range, shorter charging time, and longer service life. [more stable & long range] the antenna is built into bf-88st, so the integrated units would be effectively protected by the sturdy shell. included earpiece provides crystal clear voice. up to 3 miles talking range, suitable for boy scouts, camping, restaurants, and other business use.