Item Name: Alertor Material: ABS Battery: 4 x Built-in IR44 Button Batteries (Included) Features: Dual Speakers, Loud Sound, Mini, Easy to Carry Size: 8cm x 2.5cm x 1.5cm/3.15 x 0.98 x 0.59 (Approx.) Notes: Due to the light and screen setting difference, the color of item may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 1 x Alertor