Manufacturer Number: 12543 Brand: Other Power Source: Battery Model Number: 2 Type: Multi Usage Messaging Technique: Electric Pulse Are batteries needed to power the product or is this product a battery: 1 Is this a Dangerous Good or a Hazardous Material, Substance or Waste that is regulated for transportation, storage, and/or disposal?: 0 External Product ID Type: Not Available This product is not only compact in terms of design, it scores high on the aspect of utility too. This is what makes it worth the buy.