... plug,easier to charge, durable, high safety, tasteless 3 no supplies, no noise, no thermal effect, non-magnetic damage, anti-static, non-polluting ... use of silicone 5 there is special hygroscopic material, no replacement, no smell, no pollution. 6 Charging time 2-4 hours, it can ... -20 days Our Factory :Our Team: camera and lens portable Dry box with a hygrometer against moisture