One option for a small trimmer for beards is the Braun Beard Detail Trimmer, which is cordless and rechargeable. Here are some product details, positives, negatives, and materials for this trimmer:
Product Details:
- Precision dial for 39 length settings
- Lifetime sharp metal blades
- Li-ion battery
- Washable trimmer head and comb
- Includes a short beard comb (0.5-10mm), long beard comb (11-20mm), contour edging and detail trimmer, Gillette Fusion 5 ProGlide razor, and mini foil shaver
- Product dimensions: 8.86 x 2.42 x 8.74 inches; 14.56 ounces
Positives:
- Includes a variety of attachments for different beard lengths and styles
- Precision dial allows for fine-tuning of length settings
- Washable trimmer head and comb make for easy cleaning
Negatives:
- Some users have reported that the trimmer can be noisy
- The Gillette Fusion 5 ProGlide razor may not be necessary for those who prefer a full beard
The materials used in this trimmer are not specified in the search results.