It's all about timing.

Tentacle Sync released their new E model time code sync boxes and I purchased a pair! 

I'd been wanting a pair of Tentacle Sync boxes, but previous models would only let you adjust time code frame rate with an iPhone or computer.  (I'd heard about an option being developed that utilized the USB port on android phones, but it seemed to me like it wasn't 100% reliable on all phones.) As a dedicated Android user, this didn't work well for me.  The new E model features Bluetooth connectivity which not only allows Android users to connect and make adjustments, but also do it remotely!

DP's appreciate these as well as they are substantially lighter and smaller than other time code "lock boxes".  With how modular many modern cameras are and how many different things are strapped and bolted to them, these Tentacle Sync E's add a much needed function without getting in the way or weighing down the camera rig.

​https://tentaclesync.com