About
The BTH is a purpose-built long-sleeper yo-yo released by C3yoyodesign in 2012 in a limited run of 140 numbered units, each shipped with a certificate of authenticity. Its puck-like 6061 aluminum body houses internal copper weight rings and a 10-ball stainless steel size C bearing, bringing it to 220 grams. Simpson Wong (Wang Wai Sheuk) used the BTH to set a sleeper time of 30 minutes 28.3 seconds at the 2012 World Yo-Yo Contest. Its mass makes it unsuitable for string tricks; it was designed for sleeper-time competition.
