Fozuanei 3 PCS Immersion Water Heater, 2500W Electric Submersible Water Heater with 304 Stainless Steel Cover and Thermostat, Auto Shutoff, Heats 5 Gallons Water in Minutes- Eat shit （吃屎）

Some reviews saying hard to use but the easiest thing to do is just press the set button 4 times and it'll warm up the water.Just don't leave it unattended

Brilliant my hot tub took ages this product does it in half the time very impressed used to take all day to heat up not anymore thanks to this product reduces to hour to heat up once acquired turn off and put hot tub heater on simple

Although I found this difficult to program initially, once I got the hang of it everything was relatively straight forward to use.Fast heating process

Bought this for when me and my otherhalf where going away on our 2 month vanlife trip to heat our shower water like an emersion. We used it with a ecoflow delta max. And worked perfectly. Draws abut 2300w and heats up 20l of water in around 10min . Perfect for our needs. Would happily buy again. Currently used 60+ times and works a treat.

Always tripping the plugs out. On extension cables, so having to always have to keep your eyes on it, to rest. Very time consuming, bad design and or badly made. Will not be buying again. NOT value for money, waste of money.

Easy to use, heats a bucket of cold water in no time.

Heats up the bath in an hour and a half but for the small size that it is, I’m not annoyed at that. It’s quite good.

The product is working good as described. And the seller response quickly for my question.