Redmi Buds 3 Light: Ten meters is the communication range (open area without obstructions). Bluetooth® 5.2 wireless connectivity with Type-C charging port Battery life of earbuds: approximately five hours Earbud measurements are 24.5 x 16.7 x 24.6 mm, and the net weight of one earbud is approximately 4.2g. The dimensions of the charging case are 60 x 46 x 23.7 mm. Battery life of the charging case: approximately 18 hours About 36g is the total weight with the charging case.