High-Efficiency Portable Hand Crank Generator 28V 3A 30W — Compact Dynamo 106*64*39mm, 50-120R/MIN Emergency Charger

Hand-powered emergency charger delivering 28V at 3A (30W) in a compact 106*64*39mm body. Designed for outdoor use, it operates when cranked between 50-120R/MIN. Environmental tolerances: temperature -40°C - 60°C, relative humidity 80% - 90% (40 ± 2°C), and rated for use up to 5000m altitude. Built to be water-resistant and shock-resistant, with built-in current overload and overheating protection.