M&P M2.0 Compatibility Compatible with Smith & Wesson M&P M2.0 full-size 9mm and .40 S&W pistols (not compatible with 1.0 or Shield models).
Solar Charging System Integrated solar panel works with internal rechargeable battery for continuous operation.
Automatic Brightness Control Multi-directional light sensors automatically adjust reticle brightness.
Ultra-Long Battery Life 20,000-hour rechargeable power reserve with potential for unlimited runtime under sufficient light.
Brightness Override Mode High-brightness setting can be locked for 30 minutes when maximum visibility is required.
Low Power Warning Built-in indicator alerts you days before charging is required.