The BX3 is a premium bottom-fill disposable built around a 3.0mL PCTG chamber with dual viewing windows — track your oil level at a glance from either side. Housed in a durable aluminum body, the 316L stainless steel centerpost and clog-proof airway deliver smooth, consistent pulls, while the close-top jig-press mouthpiece seats permanently for a tight, leak-resistant seal. After bottom filling, a metal plunger inserts to lock the chamber closed for a secure, leak-free finish. The device fires automatically on draw, with a side-mounted preheat button for thicker oils and smoother first pulls. A silicone cap protects the mouthpiece in transit, and a pull-tab label cover shields the USB-C port from dust and debris. Backed by a 300mAh battery (230mAh with preheat) and USB-C charging, the BX3 is compact, reliable, and ready to brand. Specifications Model: BX3 Tank Capacity: 3.0mL Tank Material: PCTG Body Material: Aluminum Viewing Window: Dual-sided visible oil windows Fill Style: Bottom fill with metal plunger seal Centerpost Material: 316L Stainless Steel Mouthpiece: Close-top, jig-press (hand-press capable) with silicone cap Heating Core: Single Coil / Single Core Coil Material: NiCr Wick: Ceramic Resistance: 1.2Ω Fluid Inlet Diameter: Φ1.3mm × 2 Seals: Silicone 55° Battery: 300mAh (230mAh w/ preheat), 3.3V output (3A max) Charging: USB-C, 0.5A Firing Mode: Auto-draw with side preheat button Port Protection: Pull-tab label cover over USB-C port