【Brand New, Unopened】Sumikko Gurashi Emergency Alarm ★Easy operation, just pull the main unit ★Keychain type for easy attachment and detachment ●Size (main unit) → Approximately 4.6cm ●Material (main unit) → ABS ●Volume → Approximately 85dB (at 1m in front) ●Continuous sounding time → Approximately 20 minutes ●Batteries used → CR2032 x 2 ●Weight (main unit) → Approximately 36g May change to Rakuraku Mercari delivery.