Package: Pack of 2. Product Features: This item is not waterproof. Siren: 140 dB (approx.). Batteries: 3 x LR44. Working Current: 120mA Color: Black LA/Gold/Silver/Blue. 5 colors available. Dimensions: 62 x 42 x 25mm. Packaging dimensions: 8 x 5.5 x 3 cm. Features: According to 140 dB siren, loud sirens can hear almost 50 meters. Easy to carry - Sleek, smart and compact design. The delicate keyring is perfect for use with door or car keys. Easy keychain to hang on backpack, bag Convenient Built-in LED lights are super bright and activated at the touch of a button. With them, you can easily find keyholes or objects in dark places or light paths effectively. The pendant offers a wide range of uses and is a great safety option for all ages. It is well suited for women, children, the elderly, walkers, joggers, hikers and individual workers. The alarm pendant is not only used to deter would-be attackers. Thus, wild animals can also be hunted during nature walks where they are very useful for attracting attention during hiking accidents. Note: 1. The 140 dB alarm is very loud. Please do not hold it directly to your ear. 2. Pull the keychain with the pin to activate the alarm. (To deactivate the alarm, plug the metal pin back into the connector). 3. If the alarm sounds weaker, remove the screw from the back cover and replace the batteries. 4. The ringing of the alarm may not be perceptible to attackers or other people (eg in case of numbness).