Recharge On-The-Go! Power-up your cell phone, MP3 player, or PDA with this pocket-size battery pack. Enough juice to recharge most cell phones five times! Rechargeable lithium ion battery plugs into wall socket or USB port.; Seven accessory adapters for Samsung, Motorola, Nokia and Sony-Ericsson Retractable USB cable Pack recharges in 3-1/2 hours Charges most cell phones within 2-1/2 hours ; 3.9 volts; 3000 mAh; Overall dimensions: 3-15/16" L x 2-5/16" W x 3/8"; Comes with connectors for Samsung D800, M600, Motorola V3, Nokia 8600/Motorola V8, Nokia N70, Sony-Ericsson K750;Shipping Weight: 0.38 lbs.;