Basic parameters
Product form: semi-in-ear true wireless Bluetooth headset
Product color: Salt Lake White / Moon Shadow Black / Wilderness Green
Product model: M2224E1
Dimensions and weight
Weight of single ear: 4.4g (±0.2g)
Single ear size: 18.62mm * 30.68mm * 19.70mm
Charging box weight: 37.65g (±1g)
Charging box size: 50.90mm * 58.09mm * 26.98mm
Charging
Battery capacity: headset: 35mAh; charging box: 480mAh
Charging port: Type-C
Headphone input parameters: 5V ⎓ 0.11A
Charging box input parameters: 5V ⎓ 1.2A
Charging box output parameters: 5V ⎓ 0.22A
Battery life
Music playback time (AAC encoding, default settings, 50% volume)
Noise reduction off long battery life: 30h (earphones + charging box)
Noise reduction off short battery life: 6h
Noise reduction on long battery life: 20h (earphones + charging box)
Connection
Wireless connection: Bluetooth
Bluetooth protocol: HFP/A2DP/AVRCP
Bluetooth version: BT5.3
Bluetooth codec: AAC/SBC/LHDC (supported by some models)
Working distance: 10m (barrier-free open environment)
Protection level
Earphones: IP54, charging box: IPX4
Packing list
Xiaomi Buds 4 ×1
Charging box ×1
Type-C charging cable ×1
Instruction manual (including product after-sales three guarantees) ×1
