Sonline Foldable Battery Supply Desktop Calendar Temperature Digital Alarm Clock Product Name : Digital Alarm Clock; Material : Plastic,Electric Parts Folded Size : 8.5 x 8 x 0.6cm/3.3'' x 3.14'' x 0.2" ( L*W*T);Unfolded Size : 8.5 x 8 x 7.5cm/3.3'' x 3.14'' x 3" ( L*W*T) Power Supply : CR2025 battery(battery concluded); Color : Silver Tone