1)Universal USB/AC Charger:* The top panel could be slided and the metal contact pins are also moveable.* You can slide it back and forth to fit virtually any size of Li-On batteries in the market.* Please see our Title pictures for detail* To Charge the battery for LG Optimus Zone 3 , allow the 2 metal pins on the charger to touch the 1st and the 3rd contacts of battery.* For other batteries, it's not necessarily to be the 1st and 3rd though, please refer to the user manual.* You should see the LED light turn blue on the charger, that means the contacts has been firmly connected.* Now you could plug in the charger with the battery into a power socket.* The LED Light will turn Red when charging the battery, turn blue to indicate the battery is fully charged. 2)2100mAh Rechargeable Li_ion Battery:* Brand: Unbranded* High quality Li-Ion battery.* Battery Type: Lithium Ion.* Battery Capacity: 2100 mAh.* Voltage: 3.8V.* Our battery is sent out with little or no power, so please charge it for about 6 - 12 hours before using.3)Screen Touch Pen1.Smooth Movement.2.Lightweight body (5g)3.Finger Pressure