Philips all in one trimmer mg3721 3000 series self - sharpening blades

• This is an all-in-one grooming kit from Philips — part of the “Multigroom Series 3000” line. See specs for the MG3721/15 variant: 7 tools; self-sharpening steel blades; up to 60 minutes run-time. 

• The blades are described as “self-sharpening steel blades … steel blades lightly brush against one another — sharpening themselves as they work. This results in blades that are sharp as day 1 even after 3 years of use.” 

• Runtime: Up to 60 minutes of cordless use on full charge. 

• Accessories: Comes with multiple attachments/comb guards for trimming face, hair (and in some variants body) — e.g., for the MG3721/15 spec sheet: 7 tools including a nose & ear trimmer, beard combs, stubble combs, hair comb. 

• Maintenance-friendly: Rinseable attachments. No oil needed for blade care. 

• Worldwide voltage compatibility (100-240 V in many markets). 

Key Benefits

• Versatility: Because it’s “all-in-one”, you can trim your beard, style stubble, clip hair, and in some variants handle nose/ear hair. This reduces the need for multiple separate grooming devices.

• Durable blade performance: The self-sharpening steel blades are designed to stay sharp over time, which means better performance and less tugging or uneven trimming even after extended use.

• Decent cordless runtime: With up to ~60 minutes of cordless usage, you get enough time for a full grooming session without being tethered to a cable.

• Low maintenance: Rinseable attachments + “no oil needed” simplifies cleaning & upkeep.

• Good value: This model gives many features found in premium groomers (multi-attachment, self-sharpening blades, cordless runtime) at a relatively moderate price point in the Indian market.

• Reliable brand & support: Philips is a well-known brand in grooming appliances and the product has warranty coverage in many markets (e.g., 3-year guarantee mentioned for some variants) 

 How to Use It

Here’s a recommended usage guide that you can follow to get the best results:

1. Charge the device fully before first use

   • Plug in the trimmer and let it charge fully (for the MG3721/15 spec sheet: ~16 hours for full charge for NiMH battery) 

   • Ensure the battery indicator (if present) shows ready status before starting cordless grooming.

2. Select the appropriate attachment & comb

   • Choose the attachment you need: e.g., beard comb for length setting, hair comb, nose & ear trimmer, etc. For example: MG3721/15 has 2 stubble combs (1 mm, 2 mm), 2 beard combs (3 mm, 5 mm), 1 hair comb (9 mm) per spec sheet. 

   • Attach the comb or head securely to the base unit.

3. Trimming / Styling

   • For beard/stubble: Use the comb and move the trimmer against the direction of hair growth for an even trim.

   • For edging (e.g., jawline, neckline) you might remove the comb and use the blade directly (depending on comfort).

   • For hair clipping: Start with a longer length, then adjust down if you want a shorter cut.

   • For nose/ear hair trimmer: Use the dedicated attachment gently; don’t insert deeply or force.

   • Keep the device steady, use moderate pressure, and go slow for precision.

4. Cleaning & After-Use Maintenance

   • Detach combs/heads and rinse under running water if rinseable (the product mentions rinseable attachments) 

   • Shake off excess water and let attachments dry fully before re-attaching or storing.

   • Store unit in a dry, safe place; ensure charger/cable is not tangled.

5. Maintenance Tips & Best Practices

   • If battery runtime drops significantly over time, consider whether battery recharge cycle or usage habits might be impacting performance.

   • Replace combs/attachments if they become damaged or worn.

   • Although blades are “self-sharpening”, you should still keep the device clean to maintain optimal performance (hair buildup can hamper performance).

   • For optimal trimming experience, trim when the hair is dry (for stubble/beard) or slightly damp for hair, as specified by your personal preference.

   • For body if variant supports, ensure you use attachments appropriate for body hair trimming and not just facial hair.