Custom ultra-slim mobile charger & retractable earbuds sets are equipped with a ABS plastic portable Lithium-polymer battery and stainless steel shell that allows an user to charge their devices anywhere and comes with a standard USB connector cable to charge battery from your computer or a USB port with a power supply with a progress indicator bar. Input: 5V DC; Capacity: 4000mA; Output: 1A ; Lifespan: Up to 500 charges. Charging capacity: 100% for iPhone® & Smartphones; iPad®: 100% for iPad® 1, 2 and 3 - 100% for iPad® Mini; 100% for iPod® and Digital Music Players. CE and FCC approved. The promotional earbuds are retractable and offered with a 3.5mm plug. IEC 62133 CB Test Certificate Issued by UL Underwriters Laboratory. Order today to save on these best seller promotional gifts. Request a quote to know the value savings that you can avail on bulk orders of promotional ultra-slim mobile charger & retractable earbuds sets.