wooden LED Matrix christmas clock (1),Material:wood,led display (2),CE,ROHS certificate (3),Size:220(W) ... x 122(H) x 70mm wooden LED Matrix clock- Display ... memory functions(With a 3V button cell supply clock movement after the AC/DC adaptor disable).- Material ... color: Red, Yellow, Green, Blue or White. - Clock movement precision: +/- 1 second everyday.- The LED screen ...