The Custom Earpiece BlackDiamond D450 is exceptionally durable and water resistant, It is smaller than most similar radios, however has a large 2,300 mAH Lithium-Ion battery for very long battery life. The D450 is feature rich, the chassis is cast aluminum and yes, we thought of the user when we added Voice annunciation. You no longer need to fumble with the radio when changing channels, it tells you what channel you've changed to. When you wear an earpiece you hear that channel clearly in your ear when you change. No more guessing.

Strong and weatherproof, the BlackDiamond D-450 meets Mil 810 C,D, and E and its advanced audio processor is designed to excel in high-noise environments and provide superior audio, even in narrow band.

The Sentinel features less wire than other 2-wire kits. One wire leaves the radio and runs to a microphone push-to talk unit; the earpiece wire attaches at the microphone/push to talk unit near the lapel and runs under the shoulder to the back of the neck. The audio quality for the Sentinel Earpiece is excellent. The Sentinel features a large PTT that which lies flat; this means it is easy to find and that you can simply push on it rather than having to grab the entire PTT unit.

With this earpiece you can talk into your radio at a conversational tone and have crystal clear communication. The Sentinel LE uses Kevlar-reinforced wiring and top quality strain reliefs. It was designed for those in Law Enforcement, so it will survive in even the roughest work environment.

One of the biggest challenges in a large environment is keeping track of expensive equipment. The Serial Charger arrangement helps a great deal. Radios are fully charged in two hours. An added feature is the ability to charge a battery which is not attached to the radio, simply drop the battery alone into the slot. Just glance at your charger at the end of the night and be confident all of your radios have been returned!