Lightweight and compact Fits easily in a pocket or purse. This portable battery recharges the battery in your smartphone with 2600mAh. Longer usage Good for 10 hours of talk or 9 hours of internet, video use or audio playback. Compatible with most USB devices USB devices compatible , when connected to their USB charge cable (not supplied). Key Features Colour: White Battery type: lithium-ion battery Output current:1 A Output cconnections: USB Dimensions: 8 x 2.25 x 2.25 inches