1. Bluetooth on-screen power display, tilt pressure sensitivity, global anti-false touch, handwriting. 2. Buttons: Up-click the eraser, double-click the previous step, and long press to switch on and off. Down button: single-click return function, double-click multi-tasking, long-press camera function. 3. Real-time power display power level Intelligent power saving: Green light: 100%-75% Blue light: 75%-25% Red light: 25%-0% 4. Standby time: 6 months 5. Charging time: 60-80 minutes 6. Working time: 20 hours 7. Battery: 140mah 5V/0.2A
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