Battery bin size: 64.5 *57 *27mm, Packing Number: Small 8 pcs, Frequency response: 20-20KHz, 3mW×2, SNR: > 98 dB, Headphone battery capacity: 50mAh*2/3.7V (polymer lithium battery), Charging bin capacity: 500mAh, Bare machine weight: 53g, Horn specifications: φ8mm, Play time: 2.5 hours, 32Ω, Large 96 PCs, Box Specification: 300*135*240mm, Charging time: 2 hours for headphones; 2.5-3.5 hours for charging bins, Distortion: <3%, 3.7V, Standby time: 50H charging voltage: 5V-1A, Gross weight: 109 G, Product size: 46.4x 18.5x 19.5 mm. Get coupons, create price alert or check price history out! You probably want to know what is the best price?
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 price update (UTC time):
Banggood
Banggood warehouse is located in China. I don’t think there is an active coupon right now – at least in my database.
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/i1u
Old coupons (from the oldest to the newest): 20JR, 502C6B, TTxBG10, 2019SPEDM, AFfbG10, BGTWS20, BG9b29a5
(these coupons are old, so probably won’t work)
Price history and price alert
Check out price history chart (for all/most countries) for JOYROOM T04 TWS Earphones. The lowest price was: $19.99.
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)).