Earmor M20 Electronic Noise Reduction Earplug (Black,Foliage Green,Coyote Brown) Binocular simply configure the settings as

simply configure the settings as described in the following link:

the A4 multi charger will automatically stop charging when it reaches 12 hours

56 mm Interpupilar distance max

Premium type haiii hard-anodized anti-abrasive finish

Earmor M20 Electronic Noise Reduction Earplug (Black,Foliage Green,Coyote Brown) Binocular simply configure the settings asEarmor M20 Electronic Noise Reduction Earplug (Black,Foliage Green,Coyote Brown) OVERVIEW Noise reduction rating +NRR22 Intuitive one button operation Rechargeable, high battery life 2 sound effects (indoor and outdoor) Power, low battery prompt Automatic shutoff after charging, automatic shutdown after 2 hours standby Portable, comfortable and compatible Anti lost silicone Retention cord 3 sizes of earpieces cover and eartips The included data cable