Dice 510 Battery｜Variable Voltage

510 thread battery built from stacked translucent dice. Fits any standard 510 cartridge. Adjustable voltage: 2.8V – 4.0V Digital voltage display USB rechargeable ⚠ COLORS ARE RANDOM — each unit is 4 cubes drawn from 5 colors, so you may receive 2, 3 or 4 different colors. You can't pick the combination.