Vintage 1995 Star Trek The Next Generation Electronic Tricorder Key Chain or Key Ring - Unsold Former Shop Stock. Released by IPI in 1995 as part of their series of Trek Keychains. This fantastic The Next Generation Electronic Key Ring features the Tricorder which the bottom opens to produce authentic sound and flashing lights, just like the ones used by Commander Data And Commander LaForge in the TV Series, but is only 1/4 the size measuring in at 8cms by 4cmx by 2.5cms. Unsold Former Shop Stock From A Closed Down Toy And Comic Book Shop. Mint Condition And Factory Sealed. All orders received before 4.00pm Monday to Fridays are shipped the same day.