Egg-shaped baby alarm with sound detection, convenient clip-on design. Purchased around July 2025. Used for about 2-3 months, starting around August, after inserting batteries. Due to my laid-back personality, I didn't use it every day. I probably used it a total of 20-30 times. My child is now 6 months old and has become quite stable, so I haven't used it for the past 2-3 months. Operation has been confirmed and there are no problems. Batteries are still inside, so it's ready to use immediately. - Brand: BabySmile - Model: E-202 - Type: Baby Alarm - Function: Infant movement sensor - Target age: 0 months and up - Usage: Safety check during sleep Thank you for looking.