Feature: 1. A Useful Tool: Effectively used as an angle measurement, rotation angle measurement, acceleration measurement, angular velocity measurement tool, and also features an easy-to-operate digital display. 2. Connect to Your Smartphone: Digital protractor can be connected via BT with the app. The measured value of the digital inclinometer is displayed live on the screen of the mobile device. 3. Easy Carrying: Comes with a light weight and a compact size as well, the convenient storage and carrying enables both indoor and outdoor use. 4. Charger Port: This product is powered by USB interface and the charging voltage is 5V DC. The control port outputs a battery voltage of 3.7V to 4.2V. Reverse connection or short circuit between signal and ground is strictly prohibited. 5. Wide Range of Applications: You can use the digital protractor in the follwing application: Interior decoration, construction area, plumbing, floors \u0026 stairs, woodwork. Specification: Features: A Useful Tool: Effectively used as an angle measurement, rotation angle measurement, acceleration measurement, angular velocity measurement tool, and also features an easy-to-operate digital display. LCD Display: 2.4-inch digital color screen and 4 LED lights of the 4 corners for easy reading and use, clear and intuitive. Connect to Your Smartphone: Digital protractor can be connected via BT with the app. The measured value of the digital inclinometer is displayed live on the screen of the mobile device. Easy Carrying: Comes with a light weight and a compact size as well, the convenient storage and carrying enables both indoor and outdoor use. Charger Port: This product is powered by micro USB interface and the charging voltage is 5V DC. The control port outputs a battery voltage of 3.7V to 4.2V. Reverse connection or short circuit between signal and ground is strictly prohibited. Wide Range of Applications: You can use the digital protractor in the follwing application: Interior decoration, construction area, plumbing, floors & stairs, woodwork. Specifications: Color: Yellow Material: Plastic + Electronic Components + Magnet Display: 2.4" Color Screen Accuracy: 0.02° Item Size: 81 * 81 * 30mm / 3.18 * 3.18 * 1.18in Item Weight: 154g / 5.43oz Package Weight: 209g / 7.37oz Package Size: 15.5 * 10 * 4cm / 6.10 * 3.93 * 1.57in Package List: 1 * Digital Protractor 1 * USB Charging Cable 1 * User Manual (English) Package List: Package List: 1 * Digital Protractor 1 * USB Charging Cable 1 * User Manual (English)