Silent. Portable. Zero Contact. Introducing the 4iiii Fliiiight Smart Trainer. With near-silent operation and ease of setup, the Fliiiight Smart Trainer raises the bar for your next sweat-inducing session on your favorite training app.                     Operating and Charging Temperature 5°C to 45°C (41°F to 114°F)      Storage Temperature -20°C to 45°C (-4°F to 114°F)      Battery Type Rechargeable lithium ion pouch cell, 3000mAh      Wireless Riding Time 2 hours (can be wired during use)      Charging Cable Type C USB, 5V 2A charging cable      Water Resistance IPX2      Power Range 0 to 2200W      Cadence Range 40 - 160 RPM      Maximum Slope 7%      Dimensions (Set Up) L 552mm x W 741mm x H 450mm (21.7” x 29.2” x 17.7”)      Dimensions (Stored) L 565mm x W 470mm x H 110mm (22.2” x 18.5” x 4.3”)      Total Weight 7.9kg (17.4lb)      Communication Protocols ANT+ FE-C, Bluetooth® FTMS      Compatible Wheels Aluminum alloy rims with a welded or aluminum sleeve joint      Compatible Wheel Sizes 650C-700C or 26”-29”      Supports training applications through: Windows PC (ANT+) Mac OS (ANT+ or Bluetooth®) iOS (Bluetooth) Android (ANT+ or Bluetooth®)                      Zero contact design means you never need to purchase another trainer tire      Near silent operation      Folds flat for easy storage      Lightweight design maximizes portability      Virtual flywheel decreases overall weight and size      Class leading accuracy (±1%)      No need for spindown calibration before each use      Rechargeable battery power allows you to ride for      2+ hours without external power      iOS & Android apps to view real-time and historical data and access additional features: Over-the-air firmware upgrade capability for adding new features and updates Custom naming to easily pick out device in a crowd Battery status indicator Setup and calibration Diagnostics tools