Very Long Time Flashing LED By A Single 1.5V Battery..Simple LED Flasher Circuit..[Hindi] - YouTube
Ultra Low Power Led Flasher (with ATtiny) | Electronics & Arduino
LED Flashers Circuits and Projects using transistor | ElecCircuit.com
Electronics circuits - Battery Status Monitor by ICM7555 The low power LED flasher by ICM7555 Normally, when you need to use LED display status of the battery 6V-12V. Just add a resistor
2-Year Ultra Low-Power LED Flasher : 11 Steps - Instructables
555 LED Flasher Circuit
2-Year Ultra Low-Power LED Flasher : 11 Steps - Instructables