1:Color:Mint green/Black/White/Red/Pink
2:Battery:LR41 Button battery *4
3:Time: Keep ringing 30 minutes
4:LED Light : YES,LED lights flashing
5:Volumn:>120db 6:Waterproof grade: splash proof
7:Product weight :24.5g(device & battery), 40g(with packing),Paper card packaging
8:Product size:80*25*15mm/pc
9:Carton No: 400pcs/ctn , G.W:17KG/ctn, Carton size: 46*36*42cm/ctn
10:OEM/ODM avaible