Standby time about 180 hours, Color Elegant black, Charging Current 5V 120mA, Calling time about 16 hour, Playing time 5-6 hours, Horn power 50mW*6, Capacity 120mAh, Model MG10, Lens Features UV400 / Anti blue light, Impedance 16 ff, Charging time 1-2 hours, Microphone sensitivity -38dB36dB, Track Dual speaker stereo, Frequency Range 20~20000Hz, SNR ≥101dB, Frame Size 165*45*152mm, Frame Material Nylon TR90.
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. ($50.04): Cuponation9
2. ($50.04): 9OFFSUMMER
just apply this code 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): BGMG10, BG4061f4, BG17bf83, BGBuscape01, BGBRPL2, BGHOTSHOP15, BG53e9c8, Terence, Tabby20, BGd22fc4, BG6dc9f5, BG1efeb0, MVC8SPRING
(probably won’t work, but you can try them out)
Price history and price alert
Do you need price history chart (for all/most countries) for Lenovo MG10 Bluetooth Music Smart Glasses? There we go. The lowest price was: $42.99.
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)).