Feature: 1. Versatile Functionality: The roasting lamp can also be used as a nail polishing machine, making it a multi-purpose tool for your beauty routine. 2. 9-Speed Adjustable: With 9 different speed settings, you can easily customize the intensity of the polishing or roasting process to suit your needs and preferences. 3. Bidirectional Rotation: The forward and reverse rotation feature allows for a more efficient and thorough polishing or roasting experience, ensuring even results every time. 4. Convenient USB Charging: Say goodbye to bulky adapters and tangled cords - simply plug in the USB cable and charge the device effortlessly. 5. Built-in Battery and Screen Display: The built-in 500mAh battery ensures a long-lasting power supply, while the screen display allows for easy monitoring of the battery level and speed settings. Specification: Features: Versatile Functionality: The roasting lamp can also be used as a nail polishing machine, making it a multi-purpose tool for your beauty routine. 9-Speed Adjustable: With 9 different speed settings, you can easily customize the intensity of the polishing or roasting process to suit your needs and preferences. Bidirectional Rotation: The forward and reverse rotation feature allows for a more efficient and thorough polishing or roasting experience, ensuring even results every time. Convenient USB Charging: Say goodbye to bulky adapters and tangled cords - simply plug in the USB cable and charge the device effortlessly. Built-in Battery and Screen Display: The built-in 500mAh battery ensures a long-lasting power supply, while the screen display allows for easy monitoring of the battery level and speed settings. Specifications: Product model: HX-15 Product material: ABS + metal/ceramic grinding head Technical features: 9-speed speed adjustment, forward and reverse switching, USB charging, screen display, stall protection Application: manicure, grinding, polishing, exfoliation, nail baking Charging method/charging voltage: TYPE-C interface/DC 5V Working voltage: 3.7V Rated power: