AfterShokz is a sub-brand of Shenzhen Shokz Technology Co., Ltd. registered in the United States. Shokin started by making professional communication intercom headphones, including military bone conduction headphones. Through continuous product improvement, AfterShokz has become the absolute leader in the field of bone conduction headphones, accounting for 80% of the global market share. In addition, bone conduction headphones do not need to be worn in the ear, which avoids excessive sound isolation, making them an inherent advantage in safety as sports headphones. AfterShokz is currently recognised by the Athletics Federation of England as an official partner of the latter.
 
At the London Marathon, one of the six majors, AfterShokz was the only bone conduction headphone brand allowed to be used; At the Paris Marathon, which is considered the seventh most promising marathon, it was named first place in the Innovation Award in the Running Accessories category; In addition, its product Trekz Air won the Gold Award at the Asian Outdoor Industry Awards, which is the first time that a headphone product has won an award at a professional outdoor exhibition. Well-known media outlets, including CNET, techradar, and Headphones Addict, have all recommended Trekz Air.
 
Compared with the previous generation Trekz, the Trekz Air, priced at 1198 yuan, is 16.7% lighter, weighs 30g, and has a slimmer appearance. The Trekz Air headphones have physical buttons on the right side to play or pause music and adjust the volume, but the buttons are slightly smaller and a bit more difficult to navigate. The whole machine is an integrated titanium alloy skeleton, which adopts the wearing method of the head on the back of the head, and the structure is sunk, which is convenient for users to wear glasses, supports IP55 dustproof and waterproof, and has a battery life of 6 hours.
 
Many media said that the Trekz Air is much better than the Trekz in terms of sound quality, but it is still slightly inferior to traditional headphones in the same price range. Resolution and low frequencies are still unsatisfactory, with stereo sound lacking and a lack of envelopment, making sound sound like it's coming from an external speaker. At the same volume level, the Trekz Air is also much quieter than traditional headphones. Users can use the included sound-isolating earbuds to solve the problem of low volume and improve the low frequency of the headphones, but safety is sacrificed.
 
Due to the fixed shape of the bone conduction headphones, the size cannot be adjusted, so if you are a woman or teenager, you can choose the Trekz Mini. It's a lap smaller than the Trekz Air and Trekz, with the same performance as the Trekz, support for aptX Bluetooth encoding, IP55 dust and water resistance, and a battery life of 6 hours. The Trekz weighs 36g, the Mini weighs 35g, and both earphones are priced at 798 yuan.
 
AfterShokz also launched wired bone conduction headphones, AS451 and AS401, priced at 398 yuan and 348 yuan respectively. AS401 does not support calls and wire control, other aspects are the same, the weight is 42g, the wearing method is worn on the back of the head, the hanging ears are partially waterproof and add reflective strip design, it is safer to run at night, and its battery is not waterproof, 2 hours per charge, and the battery life reaches 12 hours. And the reason why they are wired headphones but also need to be charged is because bone conduction transmits sound through bone vibration, which requires a large amount of energy, and the ordinary 3.5mm headphone jack is not enough to provide the required energy.