Features:? 100%?Brand?New!?Quality?is?guaranteed. Small?compact?size. Based?on?the?newest?bluetooth?4.0?version Can?chain?user's?easy-?lost&valuable?belongings(such?as?keys?and?hand?bags)，?kids?or?pets?together?with?smart?phones?through?specified?app?software?within?a?setting?bluetooth?distance In?the?effective?distance?it?can?realize?the?functions?of: anti-lost looking?for?smart?phones self-pcrtrait voice?recording ? Specifications: Color:?black，?white，?green，?blue，?red Size:?3.7*3.7cm ? Package?Includes: 1?x?smart?finder