Weltool UB21-50 21700 Battery – 5000mAh USB-C Rechargeable Li-ion Keychain having a handy utility blade

having a handy utility blade is a must

Design Padded bottom and sides

When you need a strong lightweight neck knife that'll do the job as if your life depended on it

powered by one CR123A battery

Weltool UB21-50 21700 Battery – 5000mAh USB-C Rechargeable Li-ion Keychain having a handy utility bladeWeltool UB21 50 5000mAh 21700 USB C Rechargeable Battery The Weltool UB21 50 (WEL UB21 50) is a 5000mAh 21700 rechargeable lithium ion battery with a built in Type C charging port, so you can recharge it directly with a USB C cable no external charger needed. Its integrated steel shell design avoids the diameter increase of traditional protected cells for a reliable fit in high output flashlights. Highlights 5000mAh capacity in a 21700 cell Built in