Up to 50-hr Playtime
Jam to Music All Day and Night.
Necklace 4 provides an ultra long music-listening experience. Up to 50-hour playtime allows you to charge your Necklace 4 once a week.

Charge 10 mins, Play 10 hours
Charge as A Flash
Just 10-min fast charging can provide 10-hr music listening, making you music play on and on.

Noise Cancellation in Calls
Designed for Clear Calls
Necklace 4 is featured with proprietary noise-cancelling algorithm and inline microphone, which helps reducing surrounding noise and providing clear voice in calls.

Magnetic Lock
Intelligent Switch
Each earbuds has a built-in magnet, allowing you to get away from tangle-free carrying, get easy storage, and make a intelligent switch.

Power on: Split the magnetic earbuds
Power off: Clip the magnetic earbuds on

Dual EQ
Switch As You Like
Short press the Mode button "M" once to switch between Normal Mode and HavyBass™ Mode.

HavyBass™
Unrivalled Deep Bass
The 2nd generation HavyBass™ algorithm will provide you an extraordinary experience of thumping bass like never before!

Low-latency Game Mode
Audio and Video Sync in Game
Game mode provides fluent experience while playing video or games, helping you capture your best gaming moments.

Dual Device Connection
Freely Switch to the Other Devices
Necklace can connect 2 devices at the same time. Never worry about missing the calls from another phone.

*Long press the button "O" and "+" at the same time for 2s to connect to the second device.