Rapid heat dissipation, direct to the heat source. Heat pipe cooling system, three-dimensional circulation cooling. Strong magnetic attraction, more stable score. High-efficiency heat dissipation improves the efficiency of cold-heat conversion. Newly upgraded composite structure improves thermal conductivity and fits the phone tightly. Color: black, golden. Material: pure copper. Packing method: boxed. Single set contains: heat sink * 1. Single set weight: 50g.