Fangrui Product Details 1. Broad Device Compatibility,this Bluetooth Keyboard Seamlessly Pairs With A Variety Of Devices. 2. Equipped With Advanced Bluetooth Technology, This Keyboard Ensures A Stable Connection Up To 10 Meters Away. It Includes Media Hot Keys Like Volume Control And Track Navigation For Added Convenience. 3. Portable Design For On-the-go Use, This Compact And Keyboard Fits Easily Into Backpacks Or Handbags, Making It For Travel, Home, School, Or Office Use. 4. Enjoy Up To 80 Hours Of Typing On A Single Charge With The Built-in Lithium Battery. The Keyboard Also Features An Automatic Sleep Mode After 15 Minutes Of Inactivity To Conserve Energy. 5. Quiet And Comfortable Typing Experience, Minimizing Distractions In Quiet Environments. Item Type:keyboard Effective Distance:about 10 Meters Battery Type:built-in 120mah Lithium Battery (included) Uninterrupted Working Time:about 40 Hours Due To Different Batches, The Product Appearance And Printed Text , But It Not Affect The Use. Colour:c:yellow Material:a