Abstract: An injection molding device includes a fixing section to which a molding die having a fixed molding die and a movable molding die, an injection section that injects a molding material, and a moving section that moves the injection section relative to the fixed molding die. The injection section includes a nozzle and an injection amount adjustment mechanism. The injection molding device further includes a control section configured to control the moving section, the injection amount adjustment mechanism, and a heater. The control section executes the following in a state where the molding die is mounted on the fixing section, a first control in which the nozzle is brought into contact with the fixed molding die and the molding material is injected, and a second control in which the nozzle is separated from the fixed molding die after a predetermined time elapses from the completion of the first control.

Abstract: A portable electronic device includes: a detection unit which detects at least one of biological information and motion information of a subject; a case which accommodates the detection unit; and a strap which fixes the case to the subject. The strap has a first surface which faces the subject when the case is fixed to the subject. The first surface is provided with a plurality of first protrusions, satisfying 0.03 mm?D?1.0 mm and 1<P/D?3, where P/D is a ratio of a pitch P representing a distance between centers of two of the first protrusions and an outer dimension D of each of the first protrusions.