Bk-eo features 1. Intuitive interfaces 2. Superior performance 3. Multiple temperature control modes 4. Gradient function thermal cycler 5. Smart block 6. Three modes of operation for your choice bk-tc features 1. Advanced thermoelectric cooling technology and creative tas technology 2. Higher precision of temperature control 3. Faster heating and cooling speed 4. Better block temperature uniformity 5. Smaller instrument dimension 6. More silent operation environment