The PJ-201 is a standard 3.5mm headphone socket that has the following features: 1. Wide compatibility: PJ-201 headphone socket is the most common type in the market at present, almost all smart phones, tablets, MP3 music players, TV computers and other devices can be used. 2. Excellent sound effects: The PJ-201 headphone socket can not only transmit high-quality music signals, but also provide excellent sound output quality. With the PJ-201 socket, you can enjoy a clearer, more realistic sound quality. 3. Convenient and practical: Like other outlets on the market, the PJ-201 socket can be easily plugged into headphones or connected to other devices. In addition, it is relatively durable, can withstand a long time of use and frequent plug and pull, not easy to damage. 4. Easy maintenance: The maintenance of PJ-201 socket is also relatively simple, just need to plug the earphone into the socket. If problems occur during use, check cables and contacts to ensure that they work properly. To sum up, the PJ-201 headphone socket is a widely used standard socket that provides excellent sound quality, is very practical, and is easy to repair and replace. If you are purchasing headphones or other devices, you may prefer products with PJ-201 sockets.Video and audio products, notebook, tablet, communication products, household appliances Mobile phone stereo design, earphone,CD player, wireless phone, MP3 player, DVD, digital products Wide compatibility: The PJ-201 earphone jack is the most common type in the market, and almost all smartphones, tablet computers, MP3 players, TVs, computers and other devices can use it. High-quality sound: The PJ-201 earphone jack can not only transmit high-quality music signals, but also has excellent sound quality output. Using the PJ-201 jack, you can enjoy clearer and more realistic sound quality. The PJ-201 earphone jack is a widely used standard jack, with excellent sound quality, practicality, and convenient repair and replacement. If you want to buy headphones or other devices, you can choose products with PJ-201 jacks first.