The emitter contains the electronic that collects the biosignals (ECG, Trunk volume changes and X,Y,Z acceleration), and the last generation of Bluetooth low energy radio module to transfer data. The energy comes from a removable and rechargeable battery pack. We have made all efforts to miniaturize the electronic and to minimize the weight supported by the animal without making trade-off on signal’s quality. Both the emitter and jacket have been thought in collaboration with an industrial designer to make sure they fit well together and the assembly is comfortable for the animal. Overall weight (jacket, electrodes and emitter) does not exceed 25 grams.