This is a very dangerous travel power supply 4.2 Volts from China
power supply out of China with bad soldering and dangerously small tracks
PC Board of the power supply
hd-025a 4.2V power supply from China 
Bought on aliexpress, MPPT Solar Controller Solar Panel Voltage Stabilizer Inverter QC2.0 3.0 PD 2.0 3.0 Quick Charge Type-C DC Output for DIY Charger. Been using it since more than a year and it is very effective and charges your phone quickly.
From aliexpress This is a cool light bar that reacts to music and sound unfortunately it does not have a battery inside in this version.
From aliexpress, a great RGB mini studio light HSI Color Mode (Hue, Saturation, and Intensity) for Color Brightness Adjustment, 60 LEDs, LCD Display Screen, 359 Kinds of Colors, 0-100% Brightness Adjustment, Colour temperature adjustment. Here the 60 LEds. 20 are multicoloured LEDs, 20 are warm light and 20 are cold light LEDs Nice view of […]
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