Bamboo Electric Toothbrushes Nylon Bristles-    Biodegradable Natural Eco-Friendly Compostable Vegan Reusable    Name: intelligent acoustic wave electric toothbrush    Model: C series    Main power: 2.5W    Battery : lithium ion battery 18500/1200mAh 3.7v    Charging seat input: 5v DC 500mA   Storage And Recharge Of The Toothbrush   1 During its first usage like newly bought products and if you haven' t use it for 3 months and   over, you'll need to charge it regarding the rest of the power.   2 The suitable temperature is between 5 degree to 35 degree If the temp is over or below, it will   cause the charger can' t charge nommally or can' t charge at all   3.To keep sufficient battery, it' s advised to charge 2 times separately to save up the charging time too   4. It is nommal the temp of machine goes up at using and charging time   Charging Instructions   1 charging time about 7hours   2 Charging status mode light goes into flashing status and it goes off after 3 seconds then it goes to charging status   3 Charging complete when the when the intersity ight Green goes on and stays on   4 Low battery alert when the tensity light yellow fickering press the on/off button and yellow light goes off after 2 seconds' flickering   5 Battery infommation: all five 5 LED ights on the same time mearns the capacity is over 90%;    if it' s 4 lights, capacity over 75%if it' s 3 ights on, capacity over 50%;2ights on, capacty over 25%;1light on, capacity over 15%.    If the yelow light goes on it means capacity is below 10%, it will repeat for 4 times for reminding.