4-BAY BATTERY CHARGER - With 4 charging slots, our smart charger support to charge for different types of DC 3.7V cylindrical lithium batteries simultaneously SAFETY GUARANTEED - This battery charger is equipped with an advanced charge management circuit. Moreover, It is designed with security protection settings, the charger can effectively prevent reverse, short circuit, overcharge, over-discharge, and over-current damage. Just use it without any safety anxiety. MUTI-FUNCTIONAL LCD DISPLAY - This Intelligent battery charger With a large and clear LCD display, which can show voltage,so that you can get the charging data easily. HIGH-QUALITY MATERIAL - Rechargeable Battery Charger is made of Fire retardant material. The excellent heat dissipation and electronic circuit design, which can prolong the service life of your battery. size:145*100*30mm Material:ABS colour:black Package Contents: 1 * 18650 battery charger (Batteries are not included) 1 * USB charging cable 1 * User Manual