Pod packs a compact high density 1800mAh lithium ion battery which is enough to keep you going day and night, and day and night ... and day. Toss Pod in your pack, and you will have enough power to get through a long weekend. Pod's anodized aluminum case snaps into place via two powerful magnets on either side, allowing for easy alignment and maintaining a tight grip. This design very nicely holds your Apple Watch cable inside, keeping everything clean and organized. This solid, well crafted structure is a pleasure to use, and makes you proud to own.