As time went on, we have entered the electronic age and can not leave the life without batteries. Therefore, choosing a good battery is very important. What are you view is our high quality 4pcs TrustFire 10440 600MAH 3.6-4.2V Lithium Batteries with Protective Board Silver. There is no doubt that they are high quality and durable as well as high energy density. With inside protective board, it is safer to use. Also, these batteries are regarded better both in low and high temperature operations. Compact and portable, this 37g lithium battery will be your best choice! Come to order it soon! You will be satisfied!                                    Features             100% new<br>
 High quality and durable<br>
 Provide excellent continuous power sources to your device<br>
 High energy density, long life battery<br>
 It is suitable for many kinds of electronic devices<br>
 High effective and reliable to use<br>
                                                            Specifications             Voltage     3.6-4.2V    <br>
 Type     10440 Lithium Battery    <br>
 Capacity     600mA    <br>
 Quantity     4PCs    <br>
 Gross Weight     1.31 oz / 37 g    <br>
 Color     Silver    <br>
 Protective     Yes     <br>
                                                             Package Includes            4 x Battery<br>