Otona no Kagaku Sauna Watch Body only. No box or instruction manual. Will be sent in simple packaging. Slight scratches. No malfunctions or defects. We would appreciate it if those who understand that this is a used item would purchase it. [Sauna Watch Specifications] Functions: Heart rate monitor, pedometer, special waterproof processing Color: Vihta Green Battery: High-temperature compatible lithium battery (can be used for 4 hours at high temperatures) USB rechargeable