Electrical parameter DC 5V / 0.5A, Battery endurance Approx.10hrs for lighting / 3-6hrs for music and lighting, Standby duration Max 180 days, Vents 13, Battery capacity 3.7V 450mAh, Charging time Approx 3 hrs, Shell size 55-59cm, LED light bead 6, Speaker 2x 0.5W, Material EPS + PC, bluetooth ble 4.1 + bt 4.2, Charging port Magnetic USB.
Check coupons or create price alert down below. 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 coupon and price update (UTC):
Banggood
Banggood warehouse is located in Europe 
. I’m not sure about the price, coz I have only 1 record(s) in my database.
Link: Banggood product page
1. ($65.09): 2203ActiesNL
2. ($65.79): BG00c906
this code has to be applied in your cart after clicking “Proceed to checkout”. Click to copy code and open shop.
Additional Banggood coupons: first page and second page
Old coupons (from the oldest to the newest): 690ab0, TTxBG10, BGdyp1, 626b9c, aa9aba, AFfbG10, BGBFAFF2019, BGCITYADS2019, BGMPB2020, BGAFF10OFF, bGhOnEy10, BGdragonBoat, BGSS10%SW, bgshOOp10, BgoFErTaSchInA10, BgcLuBofErtA10, BGAHZ, BGDEALKAI002, BGMUBB, BG10OFFAFF, BGwhielabel, BG53e268, 7bcdf9, BG10OFFAFF1, BG4d9120, 00c906, ADMITAD2212, 2022ACTIESNL, BG1efeb0, MVC8SPRING, 8BGwbg2204
(I don’t think these’re gonna work, but you can try ’em out anyway)
Other warehouses/versions
This item is available in 1 another warehouse/version!
1. China – Xiaomi Smart4u SH55M Helmet ($-3)
Price history and price alert
It doesn’t make sense to generate price history chart, because there is one price record which is: $65.09.
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)).