ifamily External Battery Pack for Universal/Smartphone - Retail Packaging - Brown/Green This product is the universal external portable power source for cell phone use Output power is stable, it can work in all weather. With handy structure, graceful shapement and possessing the functions of waterproof, dustproof and shockproof, etc. Tough body with Ingress Protection Rating of IP67 Portable Charger: Large 10050mAH capacity with carabiner, easy to take along