Free & Fast shipping
Free shipping on all rugged smartwatch orders over $99.
New
KOSPET Tank M4 Smartwatch Power Pocket
Lightweight and portable, the TANK M4 power pocket is easy to carry, delivers over one full charge, and supports magnetic simultaneous charging with your smartwatch.
KOSPET Tank M4 Smartwatch Power Pocket
Sale price$19.99
Power That Never Stops
Extend Your TANK M4’s endurance with the ultra-compact Smartwatch Power Pocket.
KOSPET TANK M4 Smartwatch Battery Life Extended
The TANK M4 lasts up to 15 days (Typical Usage) on a single charge.
With the Smartwatch Power Pocket, enjoy up to 23 extra days of power.
Ultra-Light Portable Power
Carry extra 850mAh battery power in a feather-light 26g design. Magnetic snap-on charging keeps things simple, replacing your usual charging cable, and dual charging lets Power Pocket and M4 charge together—perfect for on-the-go convenience.
Charge Anytime, Anywhere
