The upcoming models of Ninebot include E series (elite-based) and T series (technology-based). The model E can meet the requirements of users of most weights. The model T is more powerful, can burst out two times of the power instantly, which could be comprehended by drawing an analogy with the turbocharged engine in automobiles. It is more suitable for heavier customers who have higher requirements on the driveability. The future model C (comfortable-based) will fit the customers pursuing more on cost performance.