- Cambridge University engineering student James Goh set a new Guinness World Record for the longest duration spinning a fidget spinner on one finger.
- Goh achieved a time of 30 minutes 34.54 seconds, beating the previous record by almost five minutes.
- He designed and built his own 'pulsar fidget spinner' for the attempt, applying his engineering knowledge of aerodynamics and tribology.
- The record-breaking spinner features a lightweight hollow aluminium core with dense tungsten concentrated at the edges to maximise kinetic energy and prolong spin time.
- The record was officially set in Hong Kong on 16 December 2025.
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