This TIGER thermal pot features electric and air heating functions. It can keep water warm at 98°C and 90°C and has a lock function. - Brand: TIGER - Model: PVA-W430 - Features: Electric & Air Heating - Keep Warm Temperatures: 98°C & 90°C - Lock Function: Yes It's an older model (made in 1999), so there's some yellowing on the lid, but it works without any problems.