Based on this product's specifications, here are some alternatives and similar models
Sonic toothbrush Philips 3100 series HX3671/14
Summary description:
The Philips 3100 series HX3671/14 Sonic electric toothbrush features a built-in battery with lithium-ion technology, providing efficient power for daily care. It includes one handle and one brush head, designed for adults. The pressure sensor helps protect gums while ensuring effective cleaning. Enjoy a gentle yet thorough brushing experience with its sonic technology.