If you forget the charger during your trip, it is often sucked in. It is especially for Apple Watch. So I will put Zens Powerbank 's battery pack in my bag. Powerbank has a built-in charger for Apple Watch and a USB port for connecting iPhone or iPad.
It is light and easy to carry but there is enough juice to charge Apple watch about 12 times. The best, but the Zens Powerbank battery pack is currently available Mack's cult Watch store.
One battery, two devices
Designed by Dutch company Zens, specializing in wireless charging systems, Powerbank has been accredited by Apple MFi and rated at 4,000 mAh.
In other words, it is good for two full charge of iPhone 7 (with 1,960 mAh battery). 1.5 charge of the larger iPhone 7 Plus (2,900 mAh battery). There is about 12 dozen full charges of the 42 mm series 2 Apple Watch (which is equipped with a battery of about 334 mAh and currently the largest battery in the Apple Watch series).
There is a standard USB 2 port for connecting to iPhone or iPad, and you can charge both devices at the same time. The USB port outputs 2 amps.
The power bank is solid and well made. Easily slide into jacket pocket or laptop bag, measures are longer than 5 inches in length. It also functions as a charging dock on your desktop and you can use it as soon as you connect it.
Overall, Zens Apple Watch / iPhone Powerbank keeps your device at the top with two excellent twin-in-one travel chargers.
price: $ 69.99
Buy from: Watch store