M90 Pro Product Features: 1.The newly upgraded sliding charging compartment can be opened with a gentle push, decompress and slide at work, and listen to songs to soothe the mood.2.The large-capacity charging compartment is equipped with a low-power Bluetooth chip, and the strong battery life is as always, and it will accompany you more than ever.3.Innovative LEDE screen digital display design, fashionable and novel appearance, and direct view of the three-screen power, intuitive and accurate display, no need to open the cover to see inside and outside.Optimized the Type-c charging socket, charging more efficiently, and distributes charging cables to the time, making it more convenient to carry out.4.The single/binaural mode can be easily switched. Pick up one of them to listen. The left and right ears are the host. After the first connection, you can use the cover again to connect in one second.A new generation of Bluetooth 5.3 technology, faster and more stable transmission, lower power consumption.5.HIFI-level sound quality, three-layer composite structure acoustics, taking into account rich vocal details, as well as solid bass, sophisticated acoustic measurement system, truly restore the beauty of sound.6.Operational function upgrade: One touch to switch previous/next song &volume adjustment wake up assistant7.Enjoy &9D heavy bass : Enjoy the HIFI scene and enjoy the immersive 9D stereo surround sound effect8.CVC80 intelligent noise reduction: Enjoy HD call effects without being affected by noisy environment M90 Pro Product Specifications: Bluetooth version: V5.3Transmission distance: 10~15 metersBluetooth frequency band: 2.4GHzHeadphone capacity: 40mAh lithium batteryCharging compartment capacity: 1200mAhStandby time: 150HTalk/play time: 3~4HOperation: touchColour: BlackPacking size: 9.7*11.1*4.0cm M90 Pro Package Included:(Retail Packaging/OPP Bag)<<<Comes with accessories: Charging Box,Charging Cable,4x Ear caps, User Manua>>> (Retail Package/Opp Bag, Support mixed color batch color, please leave a message on the order with the color and quantity you need.)