Features: - Remove septa before use. - Beeps and flashes in response to your whistle. - Easy to use and convenient to carry mini cute. - Simply whistle and this key fob will flash and beep to help you find lost keys. Press the button to light-up the keyhole. Specifications: Material: plastic Size: 5.7cm*3*1.5cm Uses 2 AGES 3+ battery (included) Package included: 1* Key Finder Notes: 1. Manual measuring please allow 1 ~ 3mm error thank you. 2. Due to the difference between different monitors the picture may not reflect the actual color of the item. We guarantee the style is the same as shown in the picture.