Petfit] Pet&rsquo;s Activity Messenger/Check Dog&rsquo;s Lack of Exercise & Obesity & Stress/Light Weight for Dogs With Pettit you can check your dogs obesity and lack of exercise easily. Pettit analyze your dogs daily activity and find specific pattern from collected activity data / Through analysis, Petfit recommends optimal exercise for your dog Durable Battery : 2 hours charging time, prolong 10 days / Worlds smallest & lightest wearable device for dogs : 0.01lb & 1.6 length Suggest optimal exercise data according to breeds, weight, gender, neutralization and age / Calculate dogs consumed calories Contents : Charging Dock, Charging Cable, Manual, Warranty, Small Leash (Connecting to Collar)