white LED source, low energy consuming, high light efficiency. , Dual charging modes: Solar and USBWork 1,LED Solar cap2,Dual charging modes: Solar and USB3, 2 x CR2032 LITHIIUM RECHARGEABLE batteries included4,Press on/off switch under the front brim5,Battery case hidden6,Solar panel charging time 7 hours7,Over 3 hours effective Lighting time8,fabric : 100% cotton LED solar cap