INTRINSICALLY SAFE WALKIE TALKIE (FIRE PROOF WALKIE TALKIE) Motorola walkie talkie XIRP8660i IS (Intrinsically Safe Radio) Features: ◆. FKP Display ◆. Output power : 4W / 5W ◆. Frequency Range - VHF: 136-174MHz UHF: 350-400MHz, 403-470MHz ◆. Channel - 1000 ◆. Battery - 2050mAh(Li-ion) ◆. IP68 ◆. MILITARY STANDARD OF MIL STD 810 C/D/E/F/G.