Air operated cable release, so enabling a long exposure to be used.

I will also throw in an adapter for use with  an SLR with no screw in thread.

The adapter was bought for a cannon Eos 1000fn, I'm not sure if it would fit another brand or not, it probably would as it's an adjustable velcro fitting.

I used this a few times on my old  canon  35mm slr. 

Excellent condition.

Thanks for looking