Redmi Buds 4 Active Wireless earphone Call noise Bluetooth 5.3

The earbuds are now equipped with the latest Bluetooth 5.3 technology, which allows for reduced power consumption, greater signal stability, and stronger resistance to interference. Even when surrounded by multiple devices, it still provides reliable transmission without any interference.True wireless binaural design, with separate left and right earphone channels. It can be used alone or in pairs. Touch design, so that your ears are no longer stressed. Easy to control music and calls and activate the voice assistant.
Both earbuds have built-in microphones with intelligent noise reduction function, which can provide clearer speech in stereo mode. Google Fast Pair
Open the cover for pop-up and simply tap to connect
In one tap, the Redmi Buds 4 Active enables quick, effortless Bluetooth pairing with your Android* devices. You can even check to see where you last placed it.The earbuds now feature a sleek and professional structural design that has passed the IPX4* water resistance test. Whether you're heading outdoors or hitting the gym and breaking a sweat, rest assured that they'll always keep up with the task at hand. The earbuds’ battery life lasts up to 5 hours on a single charge and up to 28 hours* with the portable charging case, so you can enjoy great music day and night.
Product Specs
Advanced Bluetooth® 5.3 for stable connection - Convenient connectivity with Google Fast Pair*
12mm dynamic driver for powerful bass 
Charge 10 minutes for up to 110 minutes music*
Noise cancellation for calls
Dimensions: 
Single Earbud: 31.1×20.9×22.5mm
Charging Case: 63.2×53.4×24mm
Weight:
Single Earbud: 3.65g
Charging Case: 34.7g
Total Weight: 42g
Battery:
Earbuds: 1040 (34mah)
Charging Case: 440mAh
28-hour ultra-long battery life with charging case 
5 Hours Battery Life on a single charge
Charging:
Charging Port: Type-C
Earbud input parameters: 5V⎓0.10A
Charging case input parameters: 5V⎓0.50A
Charging case output parameters: 5V⎓0.20A
Connectivity:
Wireless connection: SBC
Bluetooth protocols: HFP/A2DP/AVRCP
Communication Range: 10m