Street F-650 modes include high steady, medium steady, low steady, daylite pulse, nitelite pulse and economic flash Avenue R-50 COB modes include high flash, medium steady, low steady, daylite pulse, nitelite pulse and economic flash Fully USB rechargeable — no batteries to buy or replace Run time up to 26 hours (Street F-650) and 11.15 hours (Avenue R-50 COB) Power saving function- 10% power or less, lights will automatically switch to lowest lumen output Memory Function-Lights turn on at the last mode it was turned off Built in battery indicators