Screenshot-2018-4-19 Techno-News BlogTechno-News Blog. The robot is self-balancing, with six- to eight-hour battery life. It sells for about $3,000. Members of UCI’s class of 2016 used their senior class gift to buy four telepresence robots for the university. Law and political science professor Rick Hasen described the experience with the Double 2 as unusual, but said it helped instill camaraderie in his class. More...