Powerbank Case 3MK Endurance for Apple Watch 40 mm / 41 mm — 1200 mAh, 2.5W, USB‑C, Black

The Powerbank Case 3MK Endurance for Apple Watch 40 mm / 41 mm is a compact protective case with an integrated 1200 mAh battery designed to extend the operating time of compatible Apple Watch models. The case combines a protective shell with a built-in power source that delivers up to 2.5 W output via a USB‑C connector, enabling convenient, cable‑free recharging while storing the watch. Its compact dimensions and simple connection method make it suitable for travel and everyday carry.

Advantages

The design integrates protection and charging in a single accessory, reducing the need to carry separate power banks and chargers. The 1200 mAh battery provides emergency charging capacity and the USB‑C output supports up to 2.5 W for compatible devices. The case securely holds Apple Watch 40 mm and 41 mm sizes, protecting the display and body from scratches during storage and transport. The lightweight construction and minimal footprint make it easy to carry in a bag or pocket.

Suitable for

• Travelers who need to charge an Apple Watch while on the move
• Daily commuters requiring emergency power during long days
• Users who prefer a single accessory for storage and charging
• Situations where cableless, quick top‑up charging is needed

Key specifications

• Battery capacity: 1200 mAh (integrated)
• Maximum output power: up to 2.5 W
• Output interface: USB‑C
• Compatibility: Apple Watch 40 mm and 41 mm models
• Color: Black
• Form factor: protective case with built‑in powerbank

How to use

Place the Apple Watch into the case so that charging contacts align with the built‑in connector and close the case to secure the watch. Connect a USB‑C cable to the case only when required to recharge the case itself or to enable output if the model requires an external cable for charging other devices. Follow the manufacturer’s guidelines for charging cycles and avoid exposing the case to extreme temperatures. Monitor the battery level as indicated by any built‑in LEDs or status indicators before relying on it for extended use.

Usage recommendations

For best results, keep the case charged before travel and perform occasional full charge/discharge cycles to preserve battery health. Store the case in a dry place and avoid dropping the unit to maintain both protective and charging functions.