Just check coupons out (with price alert and history). Let’s see what best price is ATM.
Name: RGB music rhythm light, Weight: 110g, Input voltage: >DC 5V 1A, Function: 12 dynamic mode + 18 voice control modes, Type: Type-C charging/Type-C charging+APP remote control (optional), Number of lamp beads: 32 independent colorful lamp beads, Software support: AGC; intelligent noise cancellation; firmware update (upgrade through built-in serial port), Product size: 24mm*18mm*200mm, Material: Acrylic, Input interface: Micro USB / Type-C, Charging socket: Type-C socket, Light bar color: Black, Battery capacity: 380mAh-180 minutes of battery life, Frequency response: 100-16KHz, Uses: Car/desktop/home speakers/games/outdoor parties / etc.
Aliexpress
There’re some similar (or not) items on Aliexpress
Click here to search by yourself. Here are coupons that you can use.
Latest price update (UTC time):
Banggood
Banggood warehouse is located in China. Coupons for Sound Control 3D Rhythm Light RGB? Nope, there’re no coupons in Banggood.
Link: Banggood product page
Price: $-3
It looks like this item is out of stock in Banggood. If you found it then please send me the link. I will replace it.
Click here to search on Banggood!
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k and https://couponsfromchina.com/short/5cd
Old coupons (from the oldest to the newest): BGcf4c52, BGfbb65b, BG14b95c, BG03cbcd, BGb9ed7c, BG00c906, BG68b1e7, 2022ACTIESNL, BGdff1ef, BGf24180, BG15beeb, BGLED2203, tRaDetRaCKeR, 8wEbgaInS5, pROMo8cuPoN, BGf94f14, BGLED2206, BGM6B23, Cuponation9, BGMUML766, 9OFFSUMMER, BGLED07, BG8ReviTrage, BGccec78, BGLEDNOV2022, BG589b2e
(these codes were not working in latest coupon update, but you can check them out anyway)
Price history and price alert
Do you need price history chart (for all/most countries) for Sound Control 3D Rhythm Light RGB? There we go.
Price records source(s): Banggood
Click on image to enlarge. 
You can set price alert (for Banggood and Aliexpress (only if product name will be the same as on Banggood and I will post it on social media though, so it’s more like Banggood price alert)).