... SEA, AIRFeature1.External battery for iphone,ipad,high capacity2.Compatible with all mobile phones,mp3/mp4 and ... rate: ≥90%5.Built in protecting system for over charge and short circuitAdvantage1.One control, simple ... reasonablecost.3.Metal texture, good touch feelingApplicable devicecharge for iphone, ipod, Samsung, Nokia, HTC, PDA, PSP ,Mp3 ... TNT. BY AIR, BY SEA 4400mAh power supply for mobile phone