... to 15 hoursvidio play:up to 4 hoursFeatures:1.Small size,super-slim,only 9.3mm.2.Setted 750mAh polymer ... Lithium-ion battery,safe and durable,good solution for contingency time.3.Craftsmanship,protective essence to aviod scratching ... or damaging.4.Advanced technology,"Made for Iphone"official approval.5.Innovative design,cool appearance and distinctive. External charger for Iphone (5v2000mAh)