M1 means Light magnetic M2 means Standard magnetic M3 means Strong magnetic The MFJS MeiLong 3x3 Timer Cube is a new way to keep track of your times! This puzzle has a timer built right in to a corner piece! Simply hold down the button on the white face of the white/red/green corner until it says zero, then let go and start solving. When you are finished, push that button again and your time will be displayed. Note: This puzzle comes as a standard MeiLong 3x3 with the corner timer piece, a screwdriver, and two small batteries in the box. Remove the screw from the timer piece and disassemble to insert batteries. Reassemble the corner, then replace the standard white/red/green corner with the timer piece to start playing. ----------------------------------------------- Meilong 3C 3x3x3 Cube Anti-sticky Design The anti-sticky design in the contact areas rid any issue of a sticky feeling, making the cube turn more smoothly. Anti-pop Design Anti-pop feet on edge pieces puts the popping problem to an end. Big hole design Rounded holes on corners, edges, and the inner mechanism allows for the cube to have good corner-cutting, and a smooth feeling. Adjustable Elasticity Screws and springs inside make the cube adjustable, you can get a satisfying hand feel depending on personal preference. Stable Structure Professional inner structure improves the cube’s overall performance, which makes the cube more stable. ------------------------------------------- Meilong 3x3x3 Cube .Made of engineering plastic ABS, wear resistant and not easy to break .International standard color matching, color recognition is great .Fully symmetrical clasp splicing with clasp precision reinforcement makes it seamless, strength stronger, reduce accidental shedding in the process of play; .The magic cube with tighten adjusting scres, can fine tune easily tightness, find the feeling that suits oneself .Color: Colorful .Material: ABS Engineering Plastic .Order: 3x3x3 .Product Size: 5.6 x 5.6 x 5.6cm .Product Weight: 73g .Package Weight: 78g .Packing: Carton Box