Braun products are a typical example of the combination of modern industrial design and functional technology, and Apple designer Jonathan Ive has also said that he is deeply influenced by Braun's design philosophy. In 1971, Braun created the first pistol-shaped hair dryer, which was far more comfortable to hold and use than the mainstream teardrop hair dryer of the same period. Subsequently, Braun released the 3 series and 5 series hair dryers, which attracted attention in the industry.
 
Braun hair dryers are mainly divided into four series: 1 series, 3 series, 5 series and 7 series, of which the 1 series and 3 series are delicate and compact, with a power of 1200W and 1600W respectively, suitable for travel and business trips. The 5 series and 7 series belong to the household or commercial series, and the 6 air volumes can meet the needs of different hairstyles.
 
The performance of the 7 series HD770 has been improved in all aspects, with a power of 2200W, and it is equipped with a removable filter and blow dryer accessories, which is suitable for users with fluffy hairstyles and frequent curls. However, the weight of the product is large, and it is easy to have sore arms for a long time. It should be noted that HD770 is equipped with "IONTEC Hair Color Protection Ion Technology", which claims to bring out millions of ion beams when blowing, and blends cold air through the air pressure difference to avoid high temperature damage to the hair and maintain the shine of the hair, so as to achieve the effect of "color protection". The current price is close to 700 yuan.