To please the eye, the fans feature LEDs and the pump-block also has three LEDs. It changes color based on the temperature, blue means lower than 48°C, green indicates a temperature between 49-60°C and red means over 60°C. Here's some more info about the kits from TPU:
The new Antec Mercury CPU Cooler Series is engineered to keep the CPU cool for up to 50,000 hours. Manufactured with high-quality components, the products are proven to last at least five years - a benchmark of quality that surpasses the standard also backed by the Antec five-year warranty period. The Mercury models are equipped with non-lubricated graphite bearings and a durable ceramics axis in a carbon-metal construction. The radiator features an arrangement of high-density 16 FPI (fins per inch) to achieve a cooling performance perfectly suitable for any enthusiast's needs. Ideally spaced at 2.8 mm, the fins allow for cool air to pass through efficiently.