Worth 4 Dot Stereo Test Transilluminator Attachment The new Worth 4 Dot Attachment fits on your WelchAllyn, Heine or Keeler Transilluminator and supports Worth 4 DOT testing using red/green goggles. Compared to conventional Flashlight versions the Worth 4 Dot Attachment lets you avoid cumbersome flashlight units and avoids D Cell batteries, which can become weak or even leak and are not rechargeable. Rather, the Worth 4 Dot Attachment uses the transilluminator or muscle light attachment which everyone has and keeps recharged. Use your own Red/Green Anaglyph glasses or select one of ours. Includes Instructions, Attachment and Silicon adapter Worth 4 Dot Attachment - Works with your Transilluminator