TRN T300 TWS Earphones (Banggood, Aliexpress: Color Black, With Microphone Yes, Net Weight Earbud: 4g, Transmission Distance 33 feet (10m), Waterproof IPX5, Wearing Type In-Ear, Charging Box: 600mAh, Model T300, Battery Capacity Earbud: 30mAh, Frequency Response 20-20kHz, Brand TRN, Charging Case: 44g, Music Time (h) 4h, Interface Type Type-C, Supported Profiles HSP/HFP/A2DP/AVRCP, bluetooth Version V5.2, Charging Time (h) 1.5h (the best price with coupon)).
Go down and check coupons out. Remember to check price history if it is available. Let’s see what best price is ATM.
Aliexpress
There’re some similar (or not) items on Aliexpress
You can use link bot to get even lower price:
Click here to search by yourself. Here are coupons that you can use.
Latest coupon code price check (UTC time):
Banggood
Banggood warehouse is located in China.
Link: Banggood product page
1. ($104.06): BGAlerabatKL
2. ($104.06): BGd173b4
paste coupon code in your cart and click Apply after clicking “Proceed to checkout”. Click to copy code and open shop.
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k and https://couponsfromchina.com/short/feV
Old coupons (from the oldest to the newest): 7d18f7, BG4BW25, BGLOAC1, 13f142, BGa0b145, BGBuscape01, BG651551, BGBRPL2, BGHOTSHOP15, BG53e9c8
(these coupons are old, so probably won’t work)
Price history and price alert
Check out price history chart (for all/most countries) for TRN T300 TWS Earphones. The lowest price was: $88.39.
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)).