The JUSTONE J117 Dual-Slot USB Charger !#!amp!*! AHDBT-401 Battery for GoPro Hero 4 provides fast and high efficiency charging for AHDBT-401 batteries. Two slots allow for charging two batteries at one time. Made of high-grade material， it is durable for long-term use. What’s more， it is built with overcharge protection and thus is ultra safe and reliable. The charger features small and lightweight size that easily fits in your bag. And it comes attached with an AHDBT-401 battery. Don’t hesitate to buy now!                                    Features             Provide fast and high efficiency charging for AHDBT-401 batteries<br> Two slots allow for charging two batteries at one time<br> Made of high-grade material， durable for long-term use<br> Built with overcharge protection， ultra safe and reliable<br> Small and lightweight， easily fit in your bag<br> Come attached with an AHDBT-401 battery <br>                                                            Specifications             Brand     JUSTONE    <br> Model     J117    <br> Quantity     1 Piece    <br> Material     Plastic    <br> Color     Black    <br> Compatible with     GoPro Hero 4    <br> Battery Type     Li-polymer Battery    <br> Power Adapter     USB    <br> Input Current     2A    <br> Output Current     0.8 A    <br> Output Voltage     4.35 V    <br> Dimensions     (2.36 x 1.77 x 0.79)" / (6 x 4.5 x 2 )(L x W x H)    <br> Weight     1.76 oz / 50g    <br> Input Voltage     5V    <br> Voltage     3.8V    <br> Decode     Full-Decoded    <br> Mark Capacity     1160mAh    <br> Battery Actual Capacity     1160mAh       <br>                                                             Package Includes            1 x Dual USB Charger<br>1 x AHDBT 401 Battery(1160mAh)<br>1 x USB Cable (80cm)<br>