Suunto Veho Pebble Portable Battery Pack for USB Devices PZ5 Power Bank – 5,000mAh uses WYG high performance 21700 Li-ion cells, which is 40% more energy efficient than traditional power banks. Using the PD universal USB-C charging port the Pebble PZ-5 will charge most portable devices with up 12V output (all smartphones, tablets and most mini notebooks). The PZ-5 is compact and lightweight meaning it's your perfect companion when travelling. Comes complete with USB-C cable and carry pouch.