Feature: 1. Made of high‑quality ABS material, it is durable and has high strength and good toughness. 2. Can repair joint strain and aging, relieve hand numbness, essential for home use. 3. Improve hand microcirculation, comprehensively stimulate hand acupuncture points, make hand skin soft and smooth. 4. Temperature massage stimulates the hands, relaxes the muscles and activates the collaterals and unblocks the blood. 5. Two power supply methods, battery or adapter, are convenient and safe to use. Specification: Condition:100% Brand New Item Type: Electric Hand MassagerMaterial: ABS Size: Approx. 26.5 x 18 x 9cm / 10.4 x 7.1 x 3.5in Power Supply: Plug in or install 4 AA batteries (not included) Instructions: Insert the cylindrical plug of the power adapter into the DC power socket of the product, and turn on the AC power at the other end. (The external power supply does not charge the battery). When the battery is installed on the product and the external power adapter is connected, the product can still be used normally, please rest assured. Open the battery cover on the back of the main massager and install 4 AA alkaline batteries according to the positive and negative electrode instructions Function: 1. Repair joint strain and aging, relieve hand numbness 2. Whiten and maintain hand skin 3. Intelligent air pressure generates a soothing rhythm to accurately massage fingers and palms 4. Promote blood circulation, soothe muscles, and relieve hand fatigue, discomfort and soreness 5. Effectively improve hand microcirculation, fully stimulate hand acupuncture points, and make hand skin delicate and smooth. Package List: 1 x Hand Massager1 x Adapter1 x English Manual3 x Disposable Gloves Note: 1. Do not use the massager while driving.2. Do not use the massager in a high temperature and humid environment.3. Discomfort symptoms such as redness, swelling, inflammation, and blood stasis on the hands4. Please do not use it when performing hand surgery.5. Before use, please make sure that there is no jewelry in your palm.6. Do not apply nail polish within one hour before use.7. Put the palm of your hand in the massager slot and open it again to avoid damage to the gasbag when the pressure is too high.8. It is recommended to wear disposable gloves.9. Please use the configured regulated power supply and pay attention to the safety of the power supply.10. The battery is low, please remove the battery to avoid battery leakage and damage the machine: (Alkaline batteries are recommended)11. The hand massager is designed for home electronic health care and is not suitable for diagnosis, treatment or other commercial purposes.12. When cleaning, please wipe it with a cleaning cotton soaked in a neutral detergent. Do not wash the product with water13. This massager has a heating function, please pay attention to users who are not sensitive to temperature.