SZYYQPortable Bottle Keep Warm, USB Travel Milk Heat Keeper, Baby Bottle Keep Warmer Feeding Bottle Thermostat for Home Outside in Car, Storage Cover Insulation Thermostat

We carefully tested this product today under timed conditions as a trial run. The bottle was half-filled, approximately 165 ML, but the warmer only heated the upper portion, leaving the below part untouched. Despite adjusting the bottle position, there was no improvement.Additionally, the product has a minimum timer of 30 minutes for the so-called heating.I am returning this product today.

This warmer is very good .very convenient to use

Very slow for heating