really 5 functions in 1, car air purifier power bank FunctionFeatures1. Negative ion oxygenUses a negatively charged surface to ... 100 hours.4. Car chargerConstant charging voltage, with IC control, best pure power, overload protection, short-circuit protection, line input ... USB port.Accessories:1. Retraceable cable 1M length 2. With 7 connectors for: Samsung G600, D900, A300 Nokia 6101 Motolora V3 ...