CS121 Bluetooth Earphones True Wireless Earbuds BT5.1 HiFi Water Proof

[Bluetooth 5.1 & Superior Sound Quality] With the advanced Bluetooth 5.1 technology, it delivers a stable, low-latency wireless connection for high-quality sound (music or call). The in-ear earbuds use 10mm large dynamic drivers to provide powerful bass, stunning treble and clear mid, give the sound a deep bass and stereo effect. These earbuds are designed for sound and music lovers.

[30H Playback & LED Power Display] A single charge gives you a full 5 hours of listening, while the charging case for Bluetooth earbuds extends that to 30 hours. Meet your charging needs for a whole day. The LED display on wireless headphone accurately display the remaining power of earbuds and charging case.

[One-Step Pairing & Touch Control] Open the true wireless earphones charging case they'll automatically connect to the last paired device. By touching either earbuds to answer/hang up the phone, play/pause, previous song/next song , volume up/down, and access to other functions, the operation is very simple and convenient.

[Mono or TWS Mode Switch Freely] Our Bluetooth earbuds support mono mode and twin stereo mode, at mono mode each earbud can be linked to different devices, also you can share the earbuds with your friends and families. Each earbud has a built-in microphone for phone calls. CVC noise reduction can make others hear your voice very clearly while phone calls.

[Ergonomic Design & IPX7 Waterproof] The waterproof sports earphones use nano-coating to professionally protect the interior from the influence of water and sweat and prolong the service life.The lightweight design conforms to the ergonomic design, making the running headphones comfortable and fit, you don’t have to worry about the headset fall off.