Military-Grade Durability-Built to Survive the Harshest Conditions Tested to MIL-STD-810H, RB48 shrugs off drops, dust, vibration, heat, cold, and everyday abuse. It s engineered for frontline reliability Advanced Triple Proof IP67 waterproof and dustproof; against 0.1 m dense dust; 2 meters drop-proof; passed 1000 2 meter drops without breaking; designed for harsh conditions Long Range Communication up to 300,000 sq.ft./25 floors of long distance signal range; provide stable and clear transmission Rechargeable Walkie Talkie 2000mAh battery; provides up to 20 hours of battery life; USB-C charging and charge station; meet various charging methods Ready Out of the Box bright yellow design; high visibility; optional roger beep confirms the completion of the user's transmission; silicone button covers for harsh climates and wet environments.