57 advanced LED beads are scientifically distributed on the 11in/28cm long light bar, which provides a brighter and more evenly spread light with a clearer view when you are performing.  
Unlike other piano lights, this music stand light has a unique eye-caring amber mode (1800k) to prevent eye strains. The colour temperature ranges from 1800K to 6000K with 10 lumens to 150 lumens brightness levels. It always can illuminate adequate lighting for both outdoor & indoor performances. 
This piano lamp is USB-C rechargeable, charging in a faster & safer way. It has a built-in HUGE 4000mAh battery capacity. You can use it for up to 10 Hrs (Brightest mode) to 140 Hrs (Dimmest mode). The battery quality is guaranteed by a certified safety sheet (MSDS) for your safe usage. 
The clamp of this music stand light widely opens about 1.4 inches (35mm), it can securely & tightly clip on the music stand or stably stand on the piano's music desk. Plus, the anti-slip soft pads in between the clips will protect any surface from getting scratched or pinched. 
Purchase contains 1*Music Stand Light 1*USB Type-C Cable (24") 1* 4.NOTE: No adapter included.