Beard trimmer BRAUN BT 7420 — battery, AutoSense, 0.5 mm–20 mm, 100 min runtime, grey

BRAUN BT 7420 cordless beard trimmer with AutoSense technology offers consistent cutting performance across different beard densities. The device provides an adjustable trimming range from 0.5 mm to 20 mm using two precision combs and 40 distinct length steps. A built-in Lithium‑Ion rechargeable battery delivers up to 100 minutes of runtime, while the washable design simplifies cleaning. The compact grey housing is designed for home grooming and shaping beard contours with reliable battery-powered operation.

Advantages

AutoSense technology adapts motor power to beard density for even results and fewer passes. The wide trimming range from 0.5 mm to 20 mm with 40 length steps allows precise shaping and consistent length control. Long battery runtime up to 100 minutes enables multiple grooming sessions between charges. The washable head and detachable combs provide hygienic maintenance and easy cleaning. The cordless design ensures maneuverability and comfortable handling when trimming facial hair.

Suitable for

• Trimming and shaping short to medium-length beards
• Precise contouring of mustache and sideburns
• Quick battery-powered touch-ups and travel grooming
• Users who need washable and easy-to-clean trimmers

Key specifications

• Power source: Lithium‑Ion rechargeable battery with up to 100 minutes runtime
• Length settings: 40 precise steps for incremental trimming
• Trimming range: 0.5 mm minimum to 20 mm maximum
• Accessories: two precision combs for adjustable lengths
• Maintenance: washable cutting head and detachable combs for cleaning
• Color: grey housing for a compact, neutral look

How to use

Charge the trimmer fully before first use according to the included charger instructions. Attach the desired precision comb and select the required length step, starting from 0.5 mm for very short trims up to 20 mm for longer styles. Switch the device on and move the trimmer gently against the direction of hair growth for an even cut; for outlining and detailing use the bare blade without a comb. After trimming, detach the combs and rinse them under running water and use the washable head feature to remove hair. Allow all parts to dry completely before reassembly and storage.

Usage recommendations

Use AutoSense trimming for denser hair to reduce the need for repeated passes; for precise edges and contours, trim slowly and hold the skin taut. Regularly clean the cutting head and combs to maintain performance and charging efficiency. Store the trimmer in a dry place and charge it periodically if not used for extended periods to preserve battery life.