Price: (as of – Details) specification:color: White Product weight: 450gLithium battery: 3.7V/1800mAhThe product size is only 152*149*37mm/5.98*5.86*1.45 inches, which is light and portable. Provide good sleep protection for your non-family living environment when traveling/visiting relatives.Suitable for the crowd:Insomniacs, sleepless people, including middle-aged people, teachers, students, IT workers, designers, long-term computer users, women, pregnant women, business