Hammer Pulse 4.0 smart watch with best calling function is powered with 260 mAh battery, which can last for 5 to 7 days of constant usage and comes with an incredible 20 days stand by time (It may vary with heavy usage). Hammer Lifestyle is known for making best quality Smart Watches for Men, Women, Boys & Girls. Pulse 4.0 has meditation mode which enables you take a step back and do some breathing exercises thereby making your health better. It also has multiple sports mode and activity tracking. This lets you play audio via inbuilt speakers and control the music from the watch itself. We created the product with care, so it can take care of your style and health.