Our charging base has been newly upgraded, not only the appearance has been improved, but the bottom of the charging base is also designed with water leakage holes, which effectively prevents water from accumulating and causing damage to the charger, so that even if there is a splash of water, you can still use the charger safely and efficiently [Widely Compatible] Compatible with Philips One Blade QP2520 QP2520/90 shaver, Replacement original part A00390 charger [Anti tipping Design] Our newly upgraded charging base has anti-slip pads on the bottom, which will hold your razor firmly, ensuring that your razor is upright and stable while charging, no need to worry about tilting or falling over, allowing you to charge with ease [Newly Upgraded] Our charging base has been newly upgraded, not only the appearance has been improved, but the bottom of the charging base is also designed with water leakage holes, which effectively prevents water from accumulating and causing damage to the charger, so that even if there is a splash of water, you can still use the charger safely and efficiently [Charging Safety] The razor charger base has comprehensive protection functions, such as short circuit protection, over current protection, over voltage protection, overheat protection and so on. Ensure the safety of your device [Warm Tips] Compatible with Philips oneBlade has 4 different charging voltages and 3 different shapes of charging interfaces. Please confirm the voltage specifications on the back of the shaver and refer to our picture. This product is only suitable for 4.3V