press the exhaust button to allow air release smoothly

Extensive compatibility: This UHF wireless headset/lavalier microphone system can provide a clear and warm sound

Clear night vision

Crawl and view mode: meet all your needs

Human Knee Joint Ligament Muscle Foreskin Demonstration Model, Skeletal Movement Display Beauty & Personal Care press the exhaust button toProduct information Material: Plastic The human knee joint can be bent, with a muscle wrap skin demonstration model. PVC plastic is a good model for doctors and patients to explain human muscles, ligament strains, sprains, and other series of explanations and comparisons.