Sumato WatchBox Smart Charging Case with Power Bank for Apple Watch Series 4, 3, 2, 1


Rated 4.5 out of 5
65 Reviews
Dark Gray
Rose Gold
  • World's first Watch Box for Apple Watch with magnetic charging dock and built-in power bank
  • Compatible with Apple Watch series 4, 3, 2, 1 as well as Hermes, Nike+, Sport and Edition models. Fits both 38mm and 42mm watch screens
  • Remove cable clutter. Use built-in power bank for wirelessly charging iWatch and iPhone
  • Ideal for charging in a bag when traveling. Looks great on a desk or nightstand at home. 
  • Plug & play out of the box. Up to 10x Apple Watch charges on single battery charge.

Watch box for Apple Watch

In Japanese, 'sumato' means 'smart' - The Sumato Watchbox is designed to live up to its name. It's an Apple Watch case that both stores & wirelessly charges your watch at home, in office or on the move.

New designated home for your Apple Watch - Charge and store your iWatch in its own dedicated WatchBox. Built from scratch proof, aircraft grade aluminum the Sumato WatchBox will protect your watch from damage and charge it at the same time.

Compatible with Apple Watch Series 4, 3, 2, 1 - compatible with all Apple Watch Series including 38 & 42 mm watches, Hermes, Nike +, Sport and Edition models.

Ideal for Home & Travel - Whether at home, office or on the move, the WatchBox's minimal design is made to look elegant anywhere. Featuring a built-in rechargeable power bank, the lid closes to keep watch in place & charging while on the move.

Apple Watch case with power bank

Recharge your Apple Watch 10x cable-free - Built-in power bank (5000 mAh battery capacity) lets WatchBox charge your Apple Watch up to 10 times off a single charge. Use any USB plug to recharge WatchBox.

Great for Bed Side table, Desk or Office - Keep your living or working space looking sharp with WatchBox's clean & uncluttered design.
Use Power Bank as back-up iPhone battery - Is your iPhone out of battery? Connect it to the WatchBox to charge it simultaneously with your Apple Watch!

Automatically stops charging Watch once battery is full - Its not 'Sumato' for no reason! The WatchBox charging function is designed to switch off when iWatch battery is fully charged.

No more Cable Clutter - Keep your desk or bed stand cable free! WatchBox's built-in power bank will last nearly 2 weeks while charging your Apple Watch every night. All on a single charge.

Use a Single Power Cable to charge your Watch & iPhone - When the WatchBox battery is low, you'll only need one power outlet to re-charge it. You'll still be able to charge your Apple Watch and iPhone from the WatchBox.

Stylish watch case for Apple Watch
Beautiful Minimalistic Design - Using premium aircraft grade aluminum, the WatchBox has a clean & minimalistic look.

Keep Apple Watch charging in the bag
Conveniently charge iWatch in Bag or Backpack - Put your iWatch inside the WatchBox, close the lid and leave the WatchBox in your bag to continue charging while running your errands. The box is built to keep your watch fixed in position to continue charging until full.

Battery case for Apple Watch

No need to Install your Apple Watch Charger - The WatchBox comes with built-in magnetic official Apple Watch charger so you can use it straight out of the box.

MFI Certified by Apple - The WatchBox is an MFI certified product by Apple that passed strict quality guidelines. It's an official seal that makes it cross compatible with any future iOS upgrades & code changes.

Removable Magnetic Charging Dock - In case you want to keep your WatchBox at home, but need a spare iWatch battery charge to last you through the day, the charging dock is removable from the WatchBox. It has its own 500 mAh battery that is good for a single Apple Watch charge.

Use Straight out of the Box - The WatchBox comes ready to use out of the box. Contents include the WatchBox with built-in power bank, user manual, Micro USB charging cable (wall plug not included) & beautiful retail packaging box.

Stylish watch case for Apple Watch

Beautiful Minimalistic Design - Using premium aircraft grade aluminum, the WatchBox has a clean & minimalistic look. It will keep your living space looking sharp with WatchBox's uncluttered design.

Keep Apple Watch charging in the bag

Conveniently charge iWatch in Bag or Backpack - Put your iWatch inside the WatchBox, close the lid and leave the WatchBox in your bag to continue charging while running your errands. The box is built to keep your watch fixed in position to continue charging until full.

Operating instruction for Sumato WatchBoxUser manual Sumato WatchBox

Battery Capacity


Device mAh Charges
Apple Watch 300 10.5x
iPhone XS Max 3,174 1x
iPhone XR 2,942 1.1x
iPhone XS 2,658 1.2x
iPhone X 2,716 1.2x
iPhone 8 Plus 2,691 1.2x
iPhone 8 1,821 1.7x
iPhone 7 Plus 2,900 1.1x
iPhone 7  1,960 1.6x
iPhone 6S Plus 2,750 1.1x
iPhone 6S 1,715 1.8x
Samsung S9/S8 Plus 3,500 0.9x
Samsung S9/S8 3,000 1x
iPad 8,600 0.4x


Technical Specs


Watch Box
Dimensions: 92 x 92 x 46.8 mm / 3.6 x 3.6 x 1.8 in
Battery Type: 2x 18650 Lithium
Capacity: 5000mAh
Material: Aluminium alloy, PC
Input: Micro USB, DC 5V/1A
Output: USB 2.0 DC 5V/1.5A (max)
Weight: 307 grams / 0.67 lbs

Wireless Pocket Charger
Dimensions: 48.1 x 37.5 x 17.9 mm / 1.9 x 1.5 x 0.7 in
Battery Type: Polymer cobalt lithium
Capacity: 500mAh
Material: PC
Input: Micro USB DC 5V/500mA
Output: Wireless Charging Module DC5V/500Ma
Weight: 32 grams / 1.1 oz
average rating 4.5 out of 5
Based on 65 reviews
  • 5 Stars
    49 Reviews
  • 4 Stars
    6 Reviews
  • 3 Stars
    6 Reviews
  • 2 Stars
    1 Review
  • 1 Star
    3 Reviews
85% of reviewers would recommend this product to a friend
65 Reviews
Rated 5 out of 5
Review posted

Best All-Around Product EVER!

I LOVE LOVE LOVE THIS PRODUCT! I use it daily, not just when I go traveling; though it is also perfect for traveling. I love the pocket charger for when I need a quick charge throughout the day.I got the rose gold and the colour is rich and vibrant. It is sturdy and made with brushed (aluminum?) metal, not plastic and not made from cheap inner materials. It has a very good weight to it and I feel like I definitely got my money�s-worth out of this purchase!The charging time for my watch from empty to full-power is only a little over two hours and the pocket charger gives me one full charge, when I use it. I use my red flashing micro usb to charge both the box separately or also when my watch is in the box. The power buttons on both the pocket charger and the box fade in and out while charging. The pocket charger can also be micro usb charged when traveling.The manufacturer and seller (same) were fantastic to deal with! My charging box came in just a few days - well before the expected date of arrival. When it got to me, it came in a hard board box sealed in bubble wrap and in a slightly larger shipping box. It was well protected during shipping from both the rough handling (during shipping) and also from the elements. Again, prior to E.D.A. I received a lovely e-mail after delivery (next day) asking if I was pleased with the product and packaging. They even inquired if I was able to use it right out of the box and if it was charged enough for use.The box did not come with the…

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Rated 2 out of 5
Review posted

Disappointed w/ Sumato Watchbox

I wanted this to work desperately. Very disappointed. I tried everything to get it to work much to my regret... what a great concept it would have been. Would have loved to talk to Seller to get it to work. I hate leaving a review like this, but if it helps someone from making a mistake in purchasing, I must. No one wanted this to work more than me. Very let down.

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Rated 5 out of 5
Review posted

The MOST ELEGANT & High-tech Watchbox. Most Incredible Customer Service! Highly Recommended!

Sumato WatchBox is the BEST Apple Watch Case that Ive ever tried. It packs with a built-in power bank so you can charge your mobile phone anytime and anywhere. And you can also bring its removable charger keychain so you can charge your Apple Watch on the go. This is a MUST for those people who want to protect their Apple Watches and to be sure that you will not run of juice; plus the expensive look of the design. Sumato Watchbox is VERY ELEGANT, its made of Aluminum, truly very elegant and the price is superb considering its MFI Certified. But what Im so happy about is Sumatos Customer service. Its wayyyyy better than Apple CSR. They would listen and patiently answer your queries and provide timely and satisfactory support. Sumato WatchBox is HIGHLY RECOMMENDED!Disclaimer: This is NOT a sponsored item. I purchased it from my own pocket.

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Rated 4 out of 5
Review posted


It s a little bit bigger than I thought, not quite as portable as I would have liked but the construction and materials are good. The charge didn t last to long but Ive only used it once so I dont know yet.

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Rated 3 out of 5
Review posted

Worked Fine until now

Im going to lead with the fact that I think I just have a faulty unit. I got the Watchbox because my kitten liked to steal my Apple Watch off my nightstand. This was the best option and until today, it was a great choice. It did everything I wanted it to do. Today, I woke up to my watch not charging. I realized there was something wrong, so I took out the travel battery and the casing just fell off. Battery swell. Just glad it didnt explode. Unfortunately, Im only two months past my warranty, and it cant work without it.

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