Xiaomi Buds 4 Pro

Model: M2126E1
Supports Hi-Res Audio Wireless with Sony's LDAC*
Ultra-noise reduction for clear calls
Weight of a single Earbud: 5.0g (±0.2g)
Size of a single earbud: 30.74mm*21.23mm*23.67mm (with M-size earbud tips)
Up to 38 hours long listening time with case*
Weight of charging case: 39.5g (±1g)
Dimensions of charging case: 46.58mm*59.28mm*26.79mm
Total Weight: 49.5g (±1g)

Charging & Battery:

Earbuds: 53mAh
Charging case: 565mAh
Charging Port: Type-C
Earbud input parameters: 5V ⎓ 280mA
Charging case input parameters: 5V ⎓ 2.3A
Charging case output parameters: 5V ⎓ 560mA

Connection:

Wireless connection: Bluetooth® 5.3
Bluetooth protocols: Bluetooth® Low Energy/HFP/A2DP/AVRCP
Communication range: 10m (open space free of obstacles)
Speaker impedance: 16Ω