Icom F51/F61 Technical Specifications Waterproof PMR Handheld Tough, compact & lightweight. Easy to use Built-in 2-Tone, 5-Tone, CTCSS and DTCS Water-proof construction, equivalent to JIS grade 7 e.g. 1m depth of water for up to 30 minutes.) Wide frequency coverage, VHF covers 136�174MHz and UHF version covers 400-470MHz. BP-227 Standard Lithium-Ion battery pack (1700 mAh) 8-character 14 segment alphanumeric LCD. LCD backlight Built-in signalling Built-in inversion voice scrambler as standard Rolling code scrambler available Programmable functions 7 programmable buttons Optional waterproof speaker microphone, HM-138 Wide/middle/narrow channel spacing Built-in compander (same as IC-F31G series and IC-F510 series) SMA type ANT connector Up to 128 memory channels/ 8 memory banks BIIS compatible Two years parts and labour warranty