SAFE AND DURABLE KIDS DOCTOR KIT: These tools are designed for little hands and easy to grasp. They are all made of durable ABS plastic materials, which are non-toxic, BPA-free and odor-free. There are no sharp objects or edges of these tools, so you don’t have to worry about kids hurting themselves while they play. REALISTIC SOUND AND LIGHT EFFECTS: When kids press the electronic stethoscope, they can hear the heartbeat sound; the blood-pressure cuff can be worn on kids’ wrist, the air valve ball is squeezable and the indicator of gauge will rotate when child press it; the thermometer, otoscope, flashlinght and oral mirror can all emit light when working, which can give children a more real experience while playing. Batteries are included for your convenience.