D&F Dual Battery Charger with 4 Pack Replacement Battery 3.7V 900mAh Li-ion Compatible with SJCAM SJ4000 SJ5000 SJ6000 M10 Action Camera

Features:
About Battery :
1.original battery, quality assurance,
2.perfectly suitable replacement battery
3.7V-Li-ion Battery 900mAh
4.high capacity sufficient About
Charger : When compared with USB-cable charging by connecting to PC, it has strong capacity to drain power 2 times faster, Thus no worry for power endurance again.
1) Get extra battery for journey back up
2) Every port run with 1A current, astronomically promote charging speed.
3) Easy operation, convenient use.
4) Excellent Security (Every charger go out before strictly QC)
5) Safety Prevent battery overcharge, safe and reliable
6) Rugged, Corrosion resistant, Lightweight.