*Model: K09 *Description: 1 LED aluminium alloy Keychain * Function: Tail revolving switch * Discharge time: 12 hours *Battery type: 3pcs 1.5V AG13 button cell * Bulb type: 1 x f5mm white light LED *Distance of visibility: over 2 m *Color: white, silver * Product size: 19.55mm(dia.) x 55.43mm(L) *Packaging: PVC Sack *Net weight: 29g (with batteries) *LED life: over 50,000 hours