... Test Standard 3 well function underwater Description:1.to a depth of 12 meters2.high qulity &low ... mobile phone 2. good tightness, high mechanical strength, to protect your mobile phone 3. dustproof, anti-staining ... , beach pool and so on 7. received a sufficient protection in nomal use and engjoy yourself underwater8 ... , include Safety lock device.4,In order to Avoid Scratch equipment by sand and dirt, ...