Bamboo Electric Toothbrushes Nylon Bristles- Biodegradable Natural Eco-friendly Compostable Vegan Reusable(Usb Charging) The product is shipped based on the color or size of the main image of the product page. Colour:Usb charging 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.