Cordless DescriptionDr. Pen microneedle pen, compatible with E30, for cordless use.Features:- Cordless- Includes four 12-pin and four 42-pin cartridges- 5 speeds at 20,000 RPM- Adjustable depth from 0.25 to 2.50 mm- Aluminium body- Interchangeable spare parts- Weight 375g- Pen size: 14cm long x 2cm wideContent pack:- Wireless device- Wall adapter- Power cord- Manual (English)- 4 12-pin and 4 42-pin cartridges- Plastic storage box