Question about Renato T-Rex Ana-Digi Watch for Men
This is for the Renato Beast Ana-Digi but it should apply to other Renatos and watches in general. (There are different configurations for how the battery is held in place depending on the movement - some require removal of a screw to free up the arm that holds the battery down).
First remove the caseback with a caseback removal tool - the type with a handle and interchangeable prongs. Use the prongs that come with the tool to suit the slots in the caseback. Harbor Freight sells a decent one for around $8 - they are also available from various internet sources. The caseback may be on very tightly. Remove the strap/bracelet at the lugs just to be safe that you don't damage it. Now hold the case very tightly with fingers against he lugs (not on any of the push buttons or crown) - or use a case holder tool. Insert the tool with prongs lined up with the slots (for this watch I used 2 prongs since the slots are 180 apart, but I could have used 3). Holding the case very firmly push the tool into the case back very firmly so that the prongs do not slip out of the slots and scratch the caseback and turn it counter-clockwise. It may take a few tries - be careful and get a frim grip on both the case and the tool.
Once the caseback is removed you will see the battery has a thin cover plate over it. There are 2 tabs holding the plate to the movement. With a small screwdriver push down on the tab that is at the 6:00 position and move it slight to the left (counter-clockwise) and the plate will pop up and out. Remove it very carefully with a tweezers (plastic tweezers are best) being careful not to touch anything in the movement with your hands or the tweezers. The battery is now free - in this watch is the larger button type CR2016 (that is the Energizer number). Take the battery with you to Batteries Plus (cheapest) or your local watch repair or Radio Shack (maybe) and get a replacement.
Assembly is the reverse of disassembly. Being careful not to touch anything in the movement or the battery with your hands - use watchpaper (lint free) or in a pinch a paper towel or kleenex will do. With the battery in place and the cover installed (make sure the tabs are in place) use a bulb blower (or canned dust spray) and gently blow around the movement to get out any dust that may have settled in.
Unless you are a professional diver and need 30ATM water resistance (doubtful at any rate with this watch) you do not need to tighten it down too hard - just tighten the caseback down firmly and remember not to swim or bath with it on - unless you have a true Professional Divers watch you should not bath/swim with your watch on anyway. Now next time you need to remove it, it will come off much easier.
Once you have the tool(s) and practice a few times (practice on an ratty old watch to get the feel of things) it is only going to cost you the price of the battery around $3-6, instead of $15+ to have the watch battery changer guy do it. If you own many quartz watches the tools will pay for themselves after 2 or 3 battery changes.
Posted on Feb 23, 2014
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Posted on Jan 02, 2017
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