Innovative design. 稴mall size and light-weight. 稭etal pull pin(hand strap not include). 稶sed safety spotlight in dark area. 稡uilt-in 120db high output alarm. 稺hen you need help, you can pull out the metal pull pin. it emit a alarm sound instantaneously. 稩deal for protecting joggers, elder, disabled, night shift workers or people who live alone. 稯perated by 4?.5 v lr44 button cell(included). 稰roduct size: 69?2?3 mm. Packing details: 200pcs/ctn. Gw: 10 kgs. Nw: 11 kgs. In blister with blister card. Carton size: 32.5 ?8 ?3.5 cm.