Features 1、Strong spring with high resilience, long service life and no needle sticking 2、Automatic rebound and slight pain, reduce the time staying in the skin, safe to use 3、Adjustable depth, can be adjusted according to individual skin needs, convenient and practical 4、Easy to operate, just need to press the button to collect blood 5、Wide range of applications, such as cupping drain blood, acupuncture, massage, physiotherapy, etc Specification Features: 1. Strong spring with high resilience, long service life and no needle sticking. 2. Automatic rebound and slight pain, reduce the time staying in the skin, safe to use. 3. Adjustable depth, can be adjusted according to individual skin needs, convenient and practical. 4. Easy to operate, just need to press the button to collect blood. 5. Wide range of applications, such as cupping drain blood, acupuncture, massage, physiotherapy, etc. Specification: Item Type: Blood Lancing Pen Material: Aluminium Alloy Color: As Pictures Show Length: Approx. 13.8cm / 5.4inch Diameter: Approx. 2.2cm / 0.9inch Package List: 1 * Blood Lancing Pen 1 * User Manual In Chinese Note: Need to use with disposable blood collection needle, which is not included in the product.