<b>Attention:</b><br>- Do not connect with power supply when fully charged,otherwise the battery will be damaged. Charging time ≤ 2 hours<br>- Keep away from fireplace<br>- Keep away from children<br>- USB interface will turn green when charging<br>- This cigarette box can pack 20 regular cigarettes/40 slim cigarettes (standard 85mm) but not for 100mm'<br>- The cigarette box is recharged through USB interface of computer or mobile phone charger,the voltage rating and rated current is DC5 ±0.25V<br>- 1.5 to 2 hours charging time is enough, overtime could decrease battery life<br>- USB cable is included<br>- DO not touch the arc when igniting