No built-in battery, needs to be connected to power supply mobile power supply for use. The direct plug power supply is more powerful than the rechargeable version Product Features: -Frosted display screen, high-definition display, easy to operate -ABS body, anti-slip and anti-fingerprint -Simple buttons, one-button start -Can choose single-finger, two-finger, multiple-finger, and paired-finger training -Compact and portable, flexible training allows more freedom -Intelligent operation, silent and noise reduction -Built-in smart chip, safe and stable -Brand new upgrade, strong power, surging performance Product specifications: Product name: Finger training device Product size: L105×W88×H41mm Product weight: main unit about 199 grams, gloves about 200 grams Product function: Assist hand exercise Recommended use: 2-3 times a day, 15 minutes each time Output:5V 2A Scope of: ?The patient's finger joints recovered after the injury. ?Stroke, brain injury, cerebral palsy, spinal cord injury, orthopedic surgery, ?Sequelae of hand dysfunction caused by multiple sclerosis. What will you get? Recovery gloves X1 (left or right hand) Mirror gloves X1 (left or right hand) Host X1 Auxiliary strap X1 Instruction Manual X1 Power plug X1 Data cable X1 Precautions: The single use time should not be too long, and it is recommended to control it within 20 minutes.THE BEST CHOICE: Instead of watching patients endure long-term pain, this gift of patient caressing and effective long-term recovery can rekindle their enthusiasm for life. If you have any questions about our products, please contact us in time, we will respond to your technical questions within 24 hours. SUITABLE FOR PEOPLE: Electric rehabilitation gloves are suitable for people with hand dysfunction, but also for people who want to train their hands and fingers, such as: stroke, hand arthritis, hemiplegia, cerebral paresis, hemiplegia patients, adults and older children Children from six years old can use them. PORTABLE EASY TO USE: The finger rehabilitation gloves are designed with a high definition LCD touch screen with english instructions for effective operation and use by patients. Robotic Hand glove, the elderly can also complete the training independently. MULTI-MODE TRAINING: Multiple modes needed for rehabilitation training, automatic mode and confrontation mode, mirror mode, allowing the trained hand to learn the movements of other hands and adjust the "intensity" no matter your specific situation ". The intensity can be adjusted within a safe range, so there is no need to worry about the intensity. ERGONOMIC DESIGN: Hand rehabilitation gloves features half-cut design, the wrist stretcher can be worn comfortably on your wrist and fingers, suitable for finger work habits. Inhibits finger deformation in finger knock or rheumatoid arthritis, preventing finger cramps or atrophy.