Features: 1. Automatically find points, intelligent and easy. 2. Good for blood circulation. 3. Portable and easy to use. 4. Adjusting the sensitivity of points detection according to your skin type and skin condition. 5. The user-friendly design, easy to operate. 6. Audio Tips. 7. We use lithium batteries that can be recharged. 8. Treatment probe can be replaced. Specifications: Item Type: Digital Electronic Acupuncture Pen Quantity: 1pc Size: Approx. 23 x 3.5 x 4.6cm / 9.1 x 1.4 x 1.8inch Weight: Approx. 513g Pulse Frequency: 1-23Hz (Adjustable) Switch Strength: 1-10 Files Sensitivity: 1-10 Files Power Supply: Dc3.7v Relative Humidity: 80% Environmental Humidity Range: -10 Degrees -55 Degrees WHAT'S IN THE BOX: 1 x Acupuncture Pen 1 x USB Charging Cable 1 x Reflux Stick 3 x Acupuncture Pen Head 1 x English Manual and Other Accessory Part