Fangrui Product Details Description: Convenient Call Management: The Phone Lock Boxs T-shaped Opening Design Allows For Seamless Answering Of Calls Without Compromising Security Or Attention While Performing Important Tasks. Portable And : Designed For On-the-go Use, This Compact And Phone Lockbox Promotes Responsible Habits Among Children, Students And Adults. Real-time Lcd Display: The Extra-large Lcd Display Shows The Exact Time And Battery Level In Real-time For Added Convenience And Improved Monitoring Capabilities. Universal Compatibility: Measuring 21.5x9.4x2.3cm, This Cell Phone Self-regulation Box Is Compatible With A Wide Range Of Smartphones, Ensuring Versatility And Ease Of Use On A Variety Of Devices. Enhances Self-discipline: Use The Cell Phone Timer Box To Develop Self-discipline During Important Moments Such As Test Preparation, Studying Or Working, Effectively Curbing Distractions And Improving Work Efficiency. Name: Timing Cell Phone Lock Box Battery Capacity: 350mah Inner Diameter: 170 X 90mm Outer Diameter: