The Ultimate Wireless Tattooing Experience The Critical Connect Universal Battery utilizes Bluetooth 5.0 and Critical Core technology - created for consistent power and extreme accuracy. Experience ultimate power, freedom, and versatility. We sell all products individually, we also sell them in bundles if needed as well. Keep your workstation organized while charging your Critical Universal Batteries with the Critical Universal Battery Dock. Compatible for both RCA and 3.5mm connection type batteries. This dock features a no fuss easy battery swap, so you can swap out batteries quickly with just one hand. Built in magnetic bottom allows unlimited mounting capabilities for easy access during your tattooing sessions. Features: Critical Connect Battery Pack Features: Compatibility: most Rotary machines, Pens, & Cheyenne products. Display: Crisp OLED Display & Precise Voltage Utilizes Critical Core: created for consistent power and extreme accuracy. Available in: RCA & 3.5mm (Cheyenne) connections Features: jumpstart assist for large needle groupings and hard starting motors Run Time: Up to 10+ hours (regular) 5+ hours (shortly) of tattoo time depending on voltage use and machine. Voltage: 4v-13v with Critical Core (consistent and stable voltage output) Shortly Dimension: 2.1" (L) x 1.5" (W) & 1.5 oz Regular Dimension: 2.5" (L) x 1.25" (W) & 1.5 oz Includes: USB-C Charging Cable Optional Dock Charger & Wireless Foot Pedal: Dock Info: Easily charge up to 2 of your Critical Universal Battery. Batteries fit easily, precisely & will stay in place at most angles Quick battery swap; "one handed battery change" Approximately 2-3 hrs charge time from depleted to full Wireless Pedal: Compatible & wirelessly connects with the Critical Connect Foot Switch. Connect up to (4) Critical Connect batteries to (1) Critical Connect Foot Switch for adaptability & cordless freedom. Multi-color LED light status & battery life indicatory. Non-skid rubber bottom. Continuous & Momentary Mode Enabled. Only compatible with Critical Connect Universal Batteries. Size: 1” H x 5” D & weighs 8.6 oz. Made in the USA and includes a 2-year manufacturer warranty. Instruction Manual & (2) AAA Batteries Included. 2 - Battery + Charging Dock Combo: $519.99 (Shortly) & $559.99 (Regular) 2 - Battery + Charging Dock + Wireless Pedal Combo: $599.99 (Shortly) & $639.99 (Regular)