The NEW Polar Accessories T34 Transmitter is a medium-sized heart rate monitor that can be used for indoor and outdoor fitness activities. It features a black color design and comes with a chest strap for accurate heart rate measurement. This unisex adult device is powered by batteries and has a display resolution of 161 x 160. It provides both decimal and imperial measurement systems and has a battery life of up to 2 days. The Polar T34 transmitter is suitable for activities like gym training, weight lifting, yoga, and running, making it a versatile tool for fitness enthusiasts looking to track their heart rate during workouts.