User Friendly Design: With its palm size design, makes it easy to hold, you can take it virtually anywhere. Weighing a mere 9.87oz you will enjoy the comfort of this radio. Rugged & Reliable: Complies with MIL-STD-810 C/D/E/F standards and is IP54 (5: Generally protected against dust; 4: Protected against the effects of light rain or minor water splashes) ensuring outstanding performance. 16 channels: Up to 16 channels you can switch between using the channel selector knob. CTCSS / CDCSS: Set up workgroups / users with unique CDCSS / CTCSS to prevent unwanted conversations on the same frequency. Long Battery Life: 1650mAh high capacity Li-Ion battery lasts approximately 10hrs. Enhanced by a battery save feature in standby mode, with an audio & visual alert when the battery is low.