In 1898, British inventor David Misell invented the light bulb and battery.
 I created the first flashlight prototype.
 It is a flashlight with 40 lumens of brightness using a 5630 chip.
 It has a standby time of more than 5 years by adopting alkaline battery type.
 Emergency flashlights should operate for a long time without maintenance.
 Rechargeable batteries will self-discharge after a long time.
 The battery uses LR44, SR44 (1.2v 110mAh)3 cells, which is one of the most commonly used standard specifications.
 Can be used continuously for more than 2 hours
 It provides IP65 waterproof function.