Compact rechargeable battery pack quickly charges two devices at once. Use it for phones, portable speakers, smartwatches and more. 2,600 mAh lithium-ion battery charges phones up to 1-1/2 times with 1A maximum output. Samsung SDI lithium-ion battery offers 500 full charging cycles, losing only 2 percent charge per month for long-lasting performance. Rugged materials and durable components ensure years of use. Built-in circuitry protections provide safe, controlled operation. Compact design with black, soft-touch finish fits comfortably in the hand and slips effortlessly in a pocket or bag. The Tour 2600 Battery Pack includes a 2' long micro USB cord for convenient charging.