Designed as IP67 standard for dustproof and waterproof, the DXFRS300 can withstand a 2-meter drop. Equipped with 22 preset channels and voice-activated transmission, this radio can cover up to 250,000 square feet or 20 floors. It is ideal for the toughest jobsite conditions. These FRS walkie talkies offer 2662 channel combinations and presets with privacy codes to minimize interference. VOX (Voice-activated transmission) enables waterproof hands-free operation, and vibration mode is available for incoming transmissions. The 1000mAh Li-Polymer battery allows for an extended 12 hours of continuous usage, ideal for a full day of work. Offer complete protection from dust and withstand water immersion for 30 minutes in 1-meter-deep water. Include a swivel holster, desktop charger, 1000mAh rechargeable Li-Polymer battery, AC adaptor, and USB charging cable.