2 pack Multi-Color LED Cup Holder Sensor Lights, Coaster RechargeableAdd Unique Color Lights To Your Space Smart Sensors Activate Your Lights When Anything Is Placed On Top Lights Automatically Switch On or Off Depending On The Time of Day Micro USB Cable Provides Up To 15 Days of Light: By recharging your lights with the included cable for two hours, you can get up to 15 days of continued use from them.