Touch Control Board Includes a responsive touch control board for precise navigation and control Quality Shaft Built with a high-quality shaft that can withstand multiple openings and closings, ensuring durability High-Quality PU Leather The case is made from high-quality PU leather material, offering a delicate touch and premium feel Lightweight and Portable Designed to be lightweight and portable, making it easy to carry and use anywhere Strong Magnetic Force The back panel has a strong magnetic attraction, keeping your device stable and secure Specifications Bluetooth version 5.3 Effective working distance 10 meters Modulation mode GFSK Operating voltage 3.0-4.2V Operating current lt2.5mA Standby current lt0.3mA Sleep current lt40uA Charging current gt200mA Standby time gt100 days Charging time 2-3 hours Lithium battery capacity 500mAh backlight Sustainable working time gt60 hours Battery life 3 years Key force 80 plusmn 10g Key life 5 million clicks Operating temperature -10 - 55