1). Mini keychain alarm
 2). With wrist strap
 3). With snap hook
 4). With 5mm white LED light for night vision
 5). With 120dB alarm output
 6). Activated by removing metal pin
 7). Batteries 3pcs AG13 included 
 8). Approximate size 2.25 x 1.5 inches
 9). Optional Door/Window Guard Tweezer switch