Flashing led coaster,CE & ROHS approval,big logo can be printed on the top. Flashing led coasterSize:φ10*0.7cm,Weight:35.0g1PC/WHITEBOX 48PCS/INNERBOX 288PCS/CTN N.W/G.W: 10/12 KGS MEAS: 46*30*38.5 CM 1) Big logo can be printed on the top2) Waterproof3) Multi-colored coaster turns your glass into different colors4) Use 2 pcs CR1620 buttoncells which can be changeable Flashing led coaster