【Detachable Bluetooth Keyboard】This protective set includes a PU leather+TPU case, and a wireless Bluetooth keyboard. Ultra-thin and portable, which is very suitable for traveling and business trips 【With Stand】The stand case makes it much more comfortable for typing, watching videos, Internet surfing, and reading while keeping both your hands free & avoids any joint pain 【Durable Bluetooth 3.0 Keyboard】The Bluetooth 3.0 keyboard has long-lasting button life, durable to use 【Pen Holder】With a pen holder loop for stylus storage, no need to be afraid of losing your stylus pen (stylus is not included) 【Fully Protection】High-quality material combined with excellent workmanship. Fully protects your device against shock, abrasion, scratch, fingerprint, dirt, etc. Specifications: Product number: OP15 Weight: 740 Product size: 27.6*21*2cm Bluetooth version: 3.0 Effective operating distance: 10 meters Modulation mode: 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: 150mAh Sustainable working time: 100 hours Lithium battery life: 3 years Key force: 80±10g Key life: 5 million clicks Working temperature: -10 to +55℃ Charging port: Type-C