Based on this product's specifications, here are some alternatives and similar models
Nitecore NB20000GEN3 Power Bank 20000 mAh
Summary description:
The Nitecore NB20000GEN3 power bank features a robust 20000 mAh Lithium-Ion battery, ensuring reliable power on the go. With fast charging technology (Power Delivery) and a battery voltage of 3.6 V, it supports quick recharging of your devices. It includes 2 USB Type-C ports for versatile connectivity. Its sleek black design makes it a stylish and practical choice for anyone needing portable power.