Xiaomi recently disclosed that it has sold up to 20 million units of its MIJIA-branded electric toothbrushes since its inception a few years back. The company has now announced the MIJIA T301 Sonic Electric Toothbrush which has as its unique selling point, up to 50 days battery life. 
The MIJIA T301 Sonic Electric Toothbrush is capable of achieving 31,000 vibrations per minute while producing decent vibrating force. This solves the common problem of weakening the brush head when the brush is pressed to the teeth, thereby reducing the vibration power. Thus, the toothbrush can easily remove stains from the teeth.
The T301 brush head adopts copper-free bristle technology, which does not produce metal rust stains and inhibits the growth of bacteria. The outer side of the bristles is cut 10° obliquely, producing a tooth-shaped bristle design. This design protects the gums.
The toothbrush has a Standard mode that can be used for 50 days. The brush has upgraded wireless base protection that completely eliminates the risk of water ingress. The head can charge wirelessly when placed on the charging base, regardless of the angulation. A full charge is attained in 4 hours. For a brushing section, 2 minutes charge can suffice if the device runs out of battery power. 
In addition, the MIJIA T301 Sonic Electric Toothbrush has an IPX8 waterproof rating. It has a one-piece body, and double-sealed design, which solves the problem of leakage and water ingress from the charging area. This, the brush can be immersed in water without fear of damage.
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