DEATH NOTE – Muki – 320 ml – L & rules

Do you know the secrete rule of this Death Note mug?
”If the human using this mug does not drink his hot beverage in the next 6 minutes and 40 seconds, his drink will get colder.”

– Standard size (320 ml).
– High quality printing process. Dishwasher safe.
– Micro-wave safe.
– Material ceramic.
– Packaging: PVC box