Security Protection absolute: this window alarm instantly detects any vibration in windows and doors, with sensitive sensors that are reliable in all situations. Easy and quick installation: the detector glass breakage is easy to install, convenient and quick, no wiring, too many tools or specialist knowledge required. Does not take up space: the vibrating alarm is ultra-thin and ultra-light ;lightweight, compact and portable, suitable for travel and business trip, portable and reliable. all kinds of doors and windows, including wooden doors, metal doors, glass windows, etc. High quality material; and durable: the anti-theft alarm sensor is made of in a durable and reliable material, high strength, resistant to wear, difficult to wear; damage, long service life. Item Type: Door & Window Alarm Material: ABS Product Model: C100 Weight Alarm duration: approximately 80 minutes Standby time: 1 year Alarm decibel: 125 db Standby current: &le;10uAh< br />Battery type: button cell Battery model: LR44 Capacity: Battery Capacity: 160mAh (comes with built-in battery) Package List: 1 x Door Window Alarm 1 x Instruction