The Dahua 4MP Outdoor Wi-Fi Bullet (IPC-HFW1439S1P-LED-0280B) is a professional surveillance camera from Dahua Technology — the world's second-largest security manufacturer — engineered for reliable, detailed video capture in both indoor and outdoor environments across a wide range of lighting conditions. 4MP outdoor Wi-Fi bullet, full color, 2.8mm, built-in mic, IP67. Its H.265+ compression codec dramatically reduces file sizes and network bandwidth compared to H.264, enabling more cameras to be recorded on the same NVR and storage system. Compatible with Dahua NVRs, DSS/CSS centre management software, and the Dahua DMSS mobile app for remote live view and playback, it provides a complete end-to-end surveillance ecosystem from a single manufacturer.