ESMARTER Y41 Mini Keychain Flashlight | USB-C, IP66, UV

Meet your ultimate everyday carry companion — the ESMARTER Y41 Mini Keychain Flashlight. Barely wider than a finger and weighing just 18g, this compact torch punches well above its size with a blazing 400-lumen output, multi-mode side lights, a built-in magnet, and rapid USB-C charging. Whether you're navigating a dark campsite, inspecting gear, or need a hands-free emergency signal light, the Y41 has you covered.

Why You'll Love the ESMARTER Y41

• Brilliant 400LM Main Beam: Five brightness modes — Ultra Bright (400LM), High (290LM), Medium (87LM), Low (25LM), and Eco (2LM) — with up to 32 hours of battery life on the energy-saving setting.
• Versatile Side Lights: White, white strobe, UV/violet, red, red strobe, and alternating red-blue flash modes make this a genuine multi-tool light for currency & fluorescent-agent checking and roadside visibility.
• Magnetic Tail: The built-in tail magnet lets you attach the flashlight hands-free to metal surfaces — great for under-hood checks, tent poles, or emergency roadside use combined with the warning-flash modes.
• Ultra-Fast USB-C Charging: The 500mAh polymer lithium battery fully charges in just 35 minutes via the Type-C port. A colour indicator turns red while charging and green when full.
• IP66 Waterproof & Drop-Resistant: Rated IP66 against powerful water jets and tested to withstand drops from 1.5 metres — built tough for the outdoors.
• Keychain Ready: At only 15.6 × 60.5 mm, it slips onto your keys, bag, or lanyard with zero bulk.
• RoHS Certified: Meets international safety and environmental standards.

Full Specifications

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For guidance on safe use of portable lighting and battery-powered devices, visit the U.S. Consumer Product Safety Commission – Battery Safety.

Frequently Asked Questions

Q: How long does the ESMARTER Y41 keychain flashlight take to fully charge?

A: The built-in 500mAh polymer lithium battery charges fully in approximately 35 minutes using a standard USB-C cable. The LED indicator glows red during charging and switches to green when complete.

Q: Is the Y41 mini flashlight safe to use in rain or wet conditions?

A: Yes. The Y41 carries an IP66 waterproof rating, meaning it is protected against powerful water jets from any direction. It is also drop-tested to 1.5 metres, making it a reliable companion for outdoor and camping use.

Q: What are the side-light modes used for on the ESMARTER Y41?

A: The side lights offer six modes: steady white, white strobe, UV/violet (ideal for checking banknotes or detecting fluorescent agents), steady red, red strobe, and alternating red-blue flash. The magnetic tail combined with the flashing modes makes it a compact emergency warning tool when attached to a vehicle or metal surface.

Q: Can the Y41 flashlight fit on a standard keyring?

A: Absolutely. At just 15.6 × 60.5 mm and 18 grams, it is designed specifically to clip onto a keychain, bag zip, or lanyard without adding noticeable weight or bulk.