This USB rechargeable LED head torch is really good! (And no strobe!)
14:18
Reverse engineering the CORE CLH200 (it's awesome)
12:42
Análisis y modificación de faros delanteros de 5$ de AliExpress
22:14
Inside a rather good USB rechargeable head-lamp from eBay.
5:12
Flashlight Hack: No More Strobe Light
19:48
Night Buddy style headlamp teardown with schematic
18:29
Lidl 10W LED torch - test, teardown, modifications
11:55
Exploring the construction of medical electrodes
17:15