Digitech Wireless TWS Earphones with Bluetooth® 5.3 Technology (AA2165)

I recently purchased this product from Jaycar NZ and had some interesting issues with it.  I went online and found that I'm not the only one so I'm going to go over what I've discovered so far.  Some of these things are just things to note and aren't issues that I had myself but that others did appear to have problems with.

So without further ado... 

As long as the earphones haven't been used already, there will be a small thin plastic film (blue in colour for me) covering the earbuds charging contacts.  You need to remove this thin plastic film before they will be able to charge from the charging case. Pretty obvious thing really but not immediately obvious to everyone.

The LEDs on the charging case indicate the charge state of the battery in the charging case not the earbuds. While the charging case is charging, the charge state/level is indicated by a line of solid blue LEDs with the rightmost LED flashing blue indicating that it's charging.  They all turn solid blue once it's fully charged.

So far it appears that the earbuds will charge whether the charging case is on charge or not.  Obviously when the charging case is not charging it's going to be using up it's battery to charge the earbuds so the earbuds won't charge if the case battery is discharged.  The case will keep topping up the earbuds so if you don't use the product for a while, then both the case and earbuds could potentially end up discharged.

When you place an earbud into the charging case, the LED on the earbud briefly flashes red and then stays red, indicating charging.  Once the earbud is fully charged the LED turns off.  However the electrical connection between the earbuds and charging case are somewhat fiddly/dodgy, perhaps a manufacturing issue with line up of the metal contacts.  So I noticed that sometimes one or both earbuds will think they have been removed from the case and turn on and initiate a bluetooth connection.  Moving the offending earbud while seated in the charging case usually restores the electrical connection between the charging contacts, and the earbud will then turn off and start charging again.

Opening the charging case or knocking it, when the earbuds are inside, can break the electrical connection between the metallic charging contacts on the charging case and the earbuds.  Because the earbuds automatically turn on when disconnected/removed from the charging case, this results in them attempting to initiate a bluetooth connection, LED on earbuds flashing red and blue and then off when connected (??), and hence begin discharging.  If this happens often, which it does, for example when the case and earbuds are in a backpack while walking, then the earbuds will lose some charge depending on how often they are disturbed.

The included manual states "Note: The earphones will automatically turn off after 3 minutes or if they're too far away from your device.  I can confirm that this does happen as long as no bluetooth connection occurs or the bluetooth connection is lost or dropped or you don't inadvertently touch the power button on the earbuds.  My Linux based laptop puts the bluetooth module into low power mode when there is no input source/stream so this also results in the earbuds turning off.  Somewhat annoying.

That's all so far. I'll add more as I use it more.