Wismec Reuleaux RX2 21700 kit as the newest member of Reuleaux family is compatible with 21700 battery and 18650 battery. While the RX2 20 700 kit is compatible with 20700 battery and 18650 battery. RX2 21700 kit is equipped with dual optional high performance 21700 batteries, it is capable of firing up to 230W with 2A quick charge system. Featuring the retractable top filling solution and convenient bottom airflow control, the GNOME tank that packs the powerful WM coils for intense flavor can perfectly pair with RX2 21700 in terms of appearance and performance.

Now I sum up three difference among 21700 kit and 20700 kit, see the picture:

Size: 46.03*37.10*81.50mm
Weight: 297g
Thread Type: 510 spring loaded connector
Cell Type: high-rate 21700/18650 cell
Output Wattage: 1-230W
Resistance Range: 0.05-1.5ohm for TC modes
0.1-3.5ohm for VW mode
Temperature Range: 100-315C/200-600F (TC modes)
Maximum Charging Current: 2A
Maximum Output Current: 50A
Output Voltage Range: 0.5-9V
Height: 45mm
Diameter: 25mm
Weight: 51.8g
E-liquid Capacity: 2ml

1. 230W Max Output with Dual 21700/18650 Cells
2. Humanized Push-pull Design for Conenient Exchange
3. Powerful WM Coils for Huge Vapor and OPtional Flavor
4. Two Versions of E-liquid Capacity and Drip Tips Available
5. 2A Max Charging Current for Quick Charge
6. Dual Circuit Protection & Reverse Polarity Protection
7. Retractable Top Filling Solution & Convenient Bottom Airflow Control

See more info in https://vapesourcing.com/wismec-reul...-full-kit.html
if you want buy 20700 kit, click here: https://vapesourcing.com/wismec-reul...-full-kit.html