I had a week to test this product on my 2-liter bottle of soda, and I replaced the soda bottle cap with the Jokari Keeper Pump and Pour on day one. The first day was pretty uneventful since ...

It uses the cap and threaded neck from a soda bottle (translated) to make the lens adjustable and removable. In the past we’ve seen this hack using a lens cap with a hole drilled in it as the ...