You'd be forgiven for thinking Bluetooth headphones aren't as good as wired ones. That's because, back in the day, Bluetooth headphones weren't a great way to listen to your favorite music. Luckily, times have changed. Thanks to improvements in wireless transmission standards, such as aptX and innovations in battery technology, Bluetooth earbuds are quickly becoming the most popular way to listen to music.
TWS adopts a semi-ear design which can provide comfortable and even almost "insensitive" wearing experience. I7S currently uses Bluetooth version 4.0, I9S has passed the Bluetooth Special Interest Group certification and adopts the latest Bluetooth 5.0 standard. It has always been ahead of its rivals in terms of stability and latency of left and right ear connections, not because of the Bluetooth version, but because of the special Bluetooth solution on I9S: after pairing with the iPhone, or Android Smartphone, it transmits audio signals to the left and right ears of I9S respectively, thus achieving very low latency. Additionally, the AAC audio coding and decoding will optimize the acoustic cavity inside the headset, which improves the sound quality.
Wireless Type: Bluetooth
Plug Type: Wireless
With Microphone: Yes
Frequency Response Range: 20-20000Hz
Model Number: I9S TWS Wireless Earphone
Vocalism Principle: Dynamic
Control Button: Yes
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