Anker MagGo Power Bank (10K, 35W, For Apple Watch)

Versatile Power Bank: 10,000mAh capacity to charge your iPhone and Apple Watch simultaneously.
Adjustable Apple Watch Charger: Officially certified, charges an Apple Watch Series 9 to 47% in just 30 minutes.
Built-In USB-C Cable: Supports fast charging up to 30W for phones and tablets.