XIAOMI | Redmi Buds 4 Lite White | BHR7217GLDimensions 6. 5 x 4. 8 x 2. 6 cm Batteries 1 Lithium Polymer batteries required Reliable, Incredible Sound Quality The 12 mm dynamic driver brings incredible performance. Low distortion, richer bass and clearer high tones, leading to a THD 0. 1% rating Get an immersive listening experience for longer The earbuds can be used for up to 5 hours on a single charge, and up to 20 hours with the portable charging case, so you can enjoy great music day and