Description:What this study timer can offer you is that it has a lanyard hole on the back, allowing it to be attached to a lanyard and placed wherever you can easily view it.It is this study timer features that can ring loudly to let you know when it's time to study or when food is ready, making your time more organized.It is made of ABS and LED, which is durable for long term use.The length of the product is 4.3cm, the width is 4.3cm, and the height is 1.5cm.This product is perfectly suitable for home, household, dorm, study, etc.Item Name: TimerMaterial: ABS,LEDBattery: 1 x LR44 Batteries(Included)Features: Time Management, Simple Operation, Loud VoiceSize Details:4.3cm x 4.3cm x 1.5cm/1.69" x 1.69" x 0.59" (Approx.)Package Includes:1 x Timer