A smart, intuitive training computer for runners and cross-training athletes, the Polar RS300X G1 wrist heart rate monitor helps you to train at the right intensity with personal training zones.
一个聪明，跑步者和交叉培训运动员的直观培训计算机，极地RS 300 X G1的手腕心率监测有助于你在正确的强度训练与个人训练区。