Vidonn Bands Slim fitness tracker continuously tracks calories burned, floors climbed, active minutes, steps, distance, and sleep quality Detachable activity tracker syncs stats through USB or Bluetooth to your computer and smartphones IP65 water resistant rated fitness band is always on and ready to go for all kinds of outdoor sports Bracelet tracker with long battery life stays on for up to 15 days without having to change the battery Smart notification lets you know when there are incoming calls and text messages and displays caller ID with vibration alerts