Specifications :    29 songs selectable Volume control on speaker AC model for speaker 2 remote sets Remote: Water Proof (50cm meter deep) Signal range: up to 100m Built in: 29mm loud speaker Battery: NO batteries needed Pcs per Carton :  40Pcs Barcode No : 4550.3201.82955 Outer Carton Dimension : 49*47*48Cm Gift Box Dimension :  22**23*6.5Cm Kg per Carton : 11Kg Gram per Pcs : 400Gram NO. HS LABEL : 8531.80.10 NO. Pendaftaran Buku Manual & Kartu Garansi:  Long Range Transmission  Up to 100m wireless transmission Range in open area. Ensure a wide operation range for most houses. Inform you in time no matter you are preparing meals in the kitchen or watering in the garden. Free your worry about missing visitors.  Easy Installation  No wiring required. Simply plug the receiver into an electrical outlet and install the push button with included double-sided tape and screws.