Featuring HD video camera in center front, ViView HD Hat Camera captures 1920×1080P HD videos at 30 fps on the go, hands-free. Internal high capacity lithium-ion battery runs for ~about 180min on a single charge — extendable with a power bank (not included). Snapshots at 2592×1944P HD resolution. Hat is made with 100% cotton for the cloth with an adjustable band for all head sizes. Not waterproof. No night vision。