Dual Material Protection PU leather surface combined with an acrylic inner shell offers dual layers of protection, safeguarding your device from daily wear and tear. 360-Degree Rotating Stand Provides flexible viewing and typing angles, ensuring maximum comfort for various tasks such as studying, working, or watching videos. Built-in Pen Holder Features a dedicated pen holder for securely holding your pen and preventing loss (pen not included). Detachable Magnetic Keyboard Comes with a detachable magnetic wireless keyboard, providing convenience for studying or working while maintaining flexibility. Smart Auto Wake/Sleep Function Case design with auto wake/sleep function for power saving and extending battery life. Full Protection Offers comprehensive front and back protection to keep your device safe from scratches, bumps, and impacts. Specification Battery 150mAh Standard Complies with Bluetooth 3.0 HS standard Effective Distance Over 10 meters Working Voltage 3.0ndash5V Standby Current 20muA Charging Current ge100mA Key Press 80plusmn10g Operating Temperature -10 to 55degC Compatible Systems Compatible with iOS, Android, and Windows universal keyboards Quality Certification Includes BQB, FCC, and CE certifications Modulation Method 2.4GHz Working Current lt4.0mA Sleep Current lt2muA Standby Time Over 100 days Key Life Up to 5 million keystrokes Humidity 20ndash50