LUMINTURS Pack=4 Portable Mini Pocket Card Lamp Powered 3-LED Keychain Sm... Mini Portable USB Light equips with 3 orginal LG LED chips Emitting Light color: Warm white Brightness sensor(work in dark and go off at daytime or bright environment) Size:30mm (1.18 inches) in length, 12mm (0.47 inch) in width,Weight:3g Sent from China via Epacket which may take about 15-20 days to arrive