Here is a white Motorola slim universal power pack that is very slim in design and portable.  The model number is P4000. 

You will receive the following:  (if it's not listed here, it's not included!)
  • Motorola P4000 Power Pack
  • Micro USB Charging Cable
Features
  • Power On the Go: It?s small and lightweight, yet can provide up to 5 hours of additional talk time
  • CarbonFree: Through an alliance with the Carbonfund.org, Motorola has offset the energy used to manufacture, distribute and use
  • Charge up to two devices simultaneously with the built-in micro-USB cable and USBA port. Devices can include mobile phones, Bluetooth headsets, and MP3 players like the iPod.  (Item has an attached Micro-USB connector but also has a USB-2.0 port for plugging in another device with a regular USB Cable such as an iPhone, etc.)
  • Automatically powers down to save battery life when no devices are detected or when a device is fully charged.
Product Description

Free yourself from outlets with the Motorola P4000 Universal Portable Power Pack. This device can recharge a variety of batteries, including smartphones, MP3 players, tablets, Bluetooth headsets, and cameras. Built with two types of USB ports, the Motorola P4000 is designed to accommodate most devices and charge them up quickly.

One Battery, Unlimited Devices
The Motorola P4000 Universal Portable Power Pack provides a built-in micro-USB cable as well as a standard USB charge port, so you're covered whether you own an Android, Apple, and most other models. Because it contains two USB ports, you can charge two devices at the same time and continue to use them while they're charging. Devices covered include mobile phones, personal media players, Bluetooth headsets, cameras, and any other device compatible with a standard USB input.

Power Up and Power On
An alternative to carrying bulky wall chargers, the P4000 is small and lightweight. Its 4.2-ounce, 5.1-inch frame fits in your pocket and can provide up to two full phone charges anywhere you go. When you need to charge the P4000 up again, its pass-through design lets you charge both the P4000 and your devices at the same time, so you'll never be without power.

If you're in a hurry, plug your device into the Motorola P4000 to have it up-and-running quickly. Smartphones can be charged in as little as fifteen minutes

A Smarter Way to Charge
The P4000 will charge when you need it to, then automatically turn off when your device is at full power. You can also set fuel-gauging sleep settings to maximize and conserve energy capacity. The Motorola P4000 contains no BFRs or PVC and is certified carbon-free.

Motorola P4000 Universal Portable Power Pack. Works with everything under the sun.