【Premium Material】 Made of PU leather surface+acrylic inner case, dual protection for your device 【360-Degree Rotating Stand】 The 360-degree rotating stand provides a comfortable angle for viewing and typing 【Bluetooth Keyboard】 With a round key Bluetooth keyboard, the keyboard has long-lasting button life, durable to use 【Pencil Slot Design】 Built-in pencil slot design, place your pencil to avoid loss (pencil is not included) 【Four Corners Protection】 Enhanced protection with reinforced corners to safeguard your device from drops and impacts Specifications: Model: YL13 Effective Operating Distance: 10 meters Modulation Method: GFSK Operating Voltage: 3.7-4.0V Operating Current: <8mA Standby Current: <0.3mA Sleep Current: <50μA Charging Current: >200mA Standby Time: >100 days Charging Time: 2-3 hours Battery Capacity: 150mAh Continuous Working Time: ≥30 hours Battery Life: 3 years Key Press Force: 80±10g Key Lifespan: 5 million clicks Operating Temperature: -10 to +55℃ Charging Port: Type-C interface