Lumintop Tool AA $14.99 Banggood (MODS, please delete)

MODS: looks like this is for newsletter subscribers only? (Affiliate link) . Delete everything after .html if you don't like them

- Utilizes XP-L HD LED with a lifespan of 50,000 hours
- Powered by one AA or one 14500 rechargeable Li-ion battery
- Two ways to select outputs: Tail switching or twist the head
- Four output levels plus Strobe with max 650 lumens output
- Mode memory function recalls the last use output when turning on next time
- Super long runtime up to 2.5 days in Eco mode
- The optional magnetic tail cap is capable for tail standing to serve as a candle
- Light-weight and compact, best for EDC use
- Size: 89.5*18.5mm, N.W.: 23.5g (excluding battery)
- Made of aircraft-grade aluminum alloy, premium type Ⅲ hard-anodized anti-abrasive finish, toughened and wear-resistant
- IP68 rated dust-proof and waterproof, submersible to 2 meters
- 5 years free repair, limited lifetime warranty

Package included:
1 x Lumintop Tool AA 2.0 LED Flashlight
1 x O-ring
1 x user manual
1 x Diffuser
1 x Warranty card
1 x Spare DIY Magnetic Tail

whats the USB charging in you link all about?

No idea. That's their link. My part is after the .html bit.