Belfone Ultra-Slim Commercial Dmr Radio Small Walkie Talkie with Vox (OG308). 24-Month Warranty: Comprehensive 24-month warranty coverage for all system products delivered by BelFone. 16-Hour Battery Life: Equipped with 2200mAh battery providing up to 16 hours of continuous digital communication. AI Noise Reduction: Advanced AI algorithm separates human voice from noise for crystal clear communication. Ultra-Slim Design: Lightweight 15mm profile and 140g weight for enhanced portability and comfort. IP54 Waterproof Rating: Dustproof and waterproof protection suitable for outdoor and construction environments. Bluetooth 5.0 Connectivity: Supports mobile APP control, wireless earphones, and real-time audio transmission. Instant Channel Copy: Rapidly copy frequency channels in seconds without complex computer matching. Emergency Alarm System: Sends alert signals and location data instantly to ensure personnel safety.