Amazon flex block grabber BT 1200 for Whole foods, Prime, Fresh

- Return policy Performance guarantee! Send it back within 5 days if you don't like it. No return after 5 days. Read instruction email carefully. Amazon changes refreshing rate and release periods frequently. - For Android phones with blue tooth 4.0 connectivity; - Good for the update of Amazon flex app in September 2022 - This sale item has 1 oval shape controller; Wireless swipe and tap Amazon flex blocks for you via blue tooth; Size: 5mm x 30mm x 10mm, Need a cr2032 replaceable battery and replace the battery every week (depending how often you use, the battery lasts for 4~7 days. The cr2032 battery is available on Amazon or Dollar tree)- Runs max speed more than 4000 tap-tap cycles or 1200 tap-swipe cycles per minute- Store 3 sets of frequent-use settings you defined. Pre-defined 350/1200/500. You can define your own in each of three.- One key start, one key stop. Amazon's refresh frequency is changeable. One key switching from one speed to a different speed without interruption t