Overview Highlights Buttons generate electricity by themselves,no battery is required,and the generator can be turned into electricity by pressing a finger. Long distance without obstacles with a penetration of 150 meters. Digital circuit design,multiple sets of use without crosstalk,effectively avoiding troubles caused by mutual neighbourhood. 60 music ringtones,let us choose more than one. 5 levels of adjustable volume,as you like. Key Attributes Dimensions (Length x Width x Height) 10cm x 5cm x 2cm weight 0.05kg Stock Location Country of Origin Brand SUNSKY Shipment Information Weight per item 0.05 kg Dimensions per item (LWH) 10 x 5 x 2 cm Carton weight 0.16 kg Carton dimensions (LWH) 12 x 9 x 7 cm Pieces per carton 3 Stock location