ecomgear Portable AA Battery Emergency Charger For Apple iPhone 4S/4G/3G/3GS and iPod, White With this adapter, you could charge your iPod, iPhone as long as AA batteries are accessible at any time and any where. And contain a unique ABLE management cable tie. Mini body, makes it easy to carry around. Save space in your package With Micro USB interface and apple interface With LED indicator shows working status The speed and power level of charging for mobile phone depend on the AA battery and mobile phone battery capacity.