Topsung Self-rechargeable FRS Walkie Talkies TS088 with Crank Dynamo 22 Channels 5km Talk Range 2 Way Radio with Flashlight( Black, Pack of 2) It can be recharged by the dynamo crank 22 channels for USA. Talk range up to 5 km(open field), 38 CTCSS + 61 CDCSS (99) Extra A/D and D/A noise reduction circuitrto get crystal clear sound Vox control , Vox sensitivity selectable: 3 levels