1. 24-COMPARTMENT DESIGN: This cell phone jail for teachers has 24 compartments that can hold 24 phones at one time. These compartments are compatible with cell phone models for wide and convenient storage. Each phone compartment has a number easy to find. 2. LABELED AND LOCKING DESIGN: Each slot has a numerical label, which you can edit by yourself for easy identification of your cell phone without searching around. The cabinet door lock design with keys prevents the loss of your phone or your valuables. 3. STRONG AND DURABLE: The cell phone lock box for classroom is built with high-strength aluminum alloy, which is not only sturdy and durable but also pry-resistant and pressure-resistant for your long-lasting use. 4. DUAL PLACEMENTS: This cell phone lock box for classroom can not only be placed directly on the desktop but also hung with the buckles on the back. Received ready to use, no assembly required. 5. APPLICABLE SCENES: This classroom cell phone holder can be used in schools, factories, training camps, conference rooms, laboratories and other places that need to store cell phones uniformly. 6. Colour: Photo Color 7. Material: Aluminum Alloy 8. Package Contents: 1 x Mobile Phone Storage Cabinet. Only the above package content, other products are not included. 9. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.