HYH HAOYIHAO

Calculating machines; Calorimeters; Dog whistles; Electronic collars to train animals; Loudspeakers; Magnifying glasses; Pedometers; Pince-nez; Portable media players; Scales; Telescopes; Vehicle safety equipment, namely, an on-board vehicular surveillance system comprised of cameras and monitors for exposing and eliminating the blind spots on both sides of the vehicle; Walkie-talkies; Electric door bells