User Agent

Mozilla/5.0 (New Nintendo 3DS like iPhone) AppleWebKit/536.30 (KHTML, like Gecko) NX/3.0.0.5.20 Mobile NintendoBrowser/1.9.10160.JP

This user agent belongs to Nintendo Browser. Nintendo developed this Browser. This Browser run on Nintendo 3DS and it renders web contents with WebKit on New 3DS.

Browser - Nintendo Browser

Nintendo Browser

Version1.9 @ 32 bit
DeveloperNintendo
ParentNintendo Browser 1.9
Device TypeConsole

Act as 

Crawler No
Fake No
Anonymized No

Device - Apple

BrandApple
ModeliPhone
Platform (32 bit) by Nintendo
Mobile Yes
Tablet No

Capabilities

Rendering EngineWebKit by Apple Inc (For Google Chrome, iOS (including both mobile Safari, WebViews within third-party apps, and web clips), Safari, Arora, Midori, OmniWeb, Shiira, iCab since version 4, Web, SRWare Iron, Rekonq, and in Maxthon 3.)
Pointingstylus
Javascript Yes
CSS Yes Version: 3
Cookies Yes
Tables Yes
Frames Yes
IFrames Yes
Background Sounds No
Java Applets Yes
VB Script No
Activex No