The charging case of FreeBuds 4 and FreeBuds 3 adopts wireless charging technology and can be charged through the wireless charging base of Qi standard. However, there are some differences between the two in the design and function of the charging box.
1. Appearance design: the charging case of FreeBuds 4 adopts a more rounded design, which is more concise and beautiful overall, while the charging case of FreeBuds 3 is more square, and the overall feeling is tougher.
2. Charging method: The charging case of FreeBuds 4 supports wired and wireless charging methods, while the charging case of FreeBuds 3 only supports wired charging.
3. Charging time: The charging case of FreeBuds 4 supports fast charging and only takes 10 minutes to provide 4 hours of playback time for headphones, while the charging case of FreeBuds 3 takes 20 minutes to provide 4 hours of playback time for headphones.
4. Other functions: the charging case of FreeBuds 4 also supports two-way wireless charging, which can be used as a mobile power source to charge other devices, while the charging case of FreeBuds 3 does not have this function.
Overall, the FreeBuds 4 charging case is better in design and function, but both can provide stable charging for the headset, and both are very convenient to carry.
freebuds 4 is equipped with USB-C 3.0 to support fast charging, and supports intelligent low battery detection, so it supports up to 18 hours of battery life. The freebuds 3 charging case uses a Micro-USB interface and only supports 16 hours of battery life. Therefore, the charging case of freebuds 4 has obvious advantages in terms of technical parameters.
Huawei FreeBuds 4 wireless earphones have little difference from the previous generation FreeBuds 3, but the charging case has been reduced by 6.3% in volume and 20.8% in weight.