... quality of metal material 2.Fashion Promotional Clock 3.Modern alarm clock 4.Usage:Promotion & Gift Name of productSingle bell ... .Product(We sell)Mini Alarm Clock,Metal Twin Bell Clock,Plastic Twin Bell Clock,Mechanical Bell Alarm,Plastic Alarm Clock,Inner Bell Alarm Clock,Metal Wall ... 5 minutes,the clock error is normal.6.Checking the alarm sound: Clear,resonant,no hoarse,no empty sound.7.Checking ...