There are no particular malfunctions, and I think it works normally. Blue CASIO digital wristwatch, WR10BAR waterproof, with UTC display function. - Brand: CASIO - Model: BGA-190GL - Water resistance: WR10BAR - Color: Blue - Features: UTC display function - Protection: PROTECTION - Band material: Plastic There are small scratches, etc., as it was used by a child. Please check the photos. Please refrain from purchasing if you are sensitive to imperfections. Thank you for viewing.