For the i7s TWS Earbuds, they are known for their noise de-noising circuit (active noise reduction) and have a battery life of 2-3 hours.
 
If you’re also looking for a smartwatch that pairs well with earbuds, it’s important to consider compatibility, features like fitness tracking, and battery life. Make sure to check if the smartwatch supports the earbuds’ Bluetooth version for a seamless connection. 
 
 
Overview:
Products Description
Wireless version
V5.1
Distance
≥10M
Frequency response
20Hz-20KHz
Impedance
32 Ω
Charging box
2000mAh
Earbuds battery
50mAh
Charging time
1H
Playing time
4-8H