Ultra Compact 4000mAh Portable Charger External Battery Power Bank [EXQUISITE DESIGN]: The slim features plus a glossy finish ensure a more comfortable grip. Portable, mobile, Super Slim, light wight and compact designs make it more convenient to carry in your pockets or purses. [SAFETY PROTECTION]CE,Rohs&amp;FCC Certified;built-in over charging,over discharging and short-circuiting protection smart IC;Built-in 4 LED indicators to show the charging status and battery level,ensure the safty use [1 DAY POWER ON THE GO]Add almost 2 charges to an iPhone 6 or 5s, or one full charge to a 6 Plus, Galaxy S5, Note 4, Nexus 5 and other smartphones. [EXTREMELY LIGHTWEIGHT &amp; SlIM] if you don&#39;t want to take a &quot;brick&quot; when you go to work,then this would be the best soulution for your daily charge [PROMOTION] Save $3 (no coupon necessary) on this item when you purchase our 10400mah Power bank(ASIN:B013ZOOAKI) Together. Buy for a friend or loved one and save together.Please note the charging cable included in the package is a standard Micro USB charging cable.It is use to charge the power bank itself.In order to avoid the failure use,we suggest our client to use their own charging cable.