The sony cp elsb universal li ion power bank 2000mah black will let you charge your cell phone mp3 player digital camera or other device on the go with this portable usb charger you can carry a reliable backup power source with you wherever you roam the sony usb portable power supply for smartphones offers 1 full charge on the go which is ideal for quick charging anytime and anywhere features compatible with all smartphones xperia iphone blackberry and more battery capacity 2