Lingting is a brand of Lotenda (Shenzhen) Commodity Co., Ltd., which mainly produces sleep care products, including soundproof earplugs, eye masks, masks, etc. In 2006, Zero Hearing launched the first generation of sound-isolating earbuds, as a pioneer sound-isolating earbud brand in China, various foreign brands have entered the domestic market, domestic small factories, OEM products at low prices to seize market share under multiple pressures, sales in recent years are slightly sluggish, but still maintain a good reputation for high quality.
 
The sound-isolating earbuds with zero hearing are mainly foam earplugs, which are mainly aimed at sleep scenes, and the products are relatively simple. Its most classic anti-noise guard sleep earbuds are made of PU slow-rebound memory foam, and there are four colors with the theme of four seasons, two pairs per box, and a portable case is included, each pair is about 20 yuan, which can be reused, and the price is slightly higher. However, the texture of the zero hearing earbuds is soft, the rebound time is moderate, the size is very suitable for women's ear canals, the shape has been improved for the Chinese ear canal, the ear canal fits well, provides SNR36dB noise reduction protection, and can basically isolate noise when sleeping, suitable for people who pay attention to comfort.