【Detachable Bluetooth-compatible Keyboard】This protective set includes a PU leather case with a dedicated pen slot + a detachable Bluetooth-compatible keyboard, combining style with functionality 【Three-Color Backlight Keyboard】The keyboard offers adjustable three-color backlighting, enhancing visibility and aesthetics in any environment 【Stable Bluetooth-compatible 3.0 Connection】Supports a reliable Bluetooth-compatible 3.0 interface with a 10-meter effective range for uninterrupted wireless typing 【Durable Battery Life】Equipped with a 280mAh rechargeable lithium battery, supporting up to 100 hours of continuous use per charge 【Fully Protection】High-quality material combined with excellent workmanship makes this cover feel very stylish. Fully protects your device against shock, abrasion, scratches, fingerprints, dirt, etc. Specifications: Bluetooth-compatible: 3.0 standard Effective operating distance: 10 meters Modulation method: GFSK Working voltage: 3.0 - 4.2V Working current: <2.5mA Standby current: <0.3mA Sleep current: <40uA Charging current: >200mA Standby time: >100 days Charging time: 3 - 4 hours Lithium battery capacity: 280mAh Sustainable working hours: 100 hours Lithium battery life: 3 years Button force: 80±10g Button life: 5 million clicks Working temperature: -10℃ - 55℃ Touchpad: Yes Backlight: Three-color Interface: Type-C