Manscaped The Lawn Mower 5.0 Ultra vs Oral-B iO Series 9

The Lawn Mower 5.0 Ultra is a body and groin grooming trimmer built around a dual-head system: one interchangeable head is a skin-safe trimmer blade for cutting length, the other is a foil shaver for a close finish. Swapping between them is what distinguishes it from single-blade groomers, since it covers both bulk reduction and close shaving from one handle rather than needing two devices. It is fully waterproof for wet or dry use in the shower, charges over USB-C and supports wireless charging. The motor maintains constant RPM as the battery drains, which matters in this application because a motor slowing under load is what causes hairs to be pulled rather than cut. It includes a fixed 1.4mm guard plus two adjustable combs covering 2 to 12mm, and ships with a travel pouch and power adapter.

The Oral-B iO Series 9 pairs a magnetic, micro-vibrating brush head with linear magnetic drive technology for a smoother, gentler brushing motion compared to traditional oscillating-rotating brushes, while still delivering thorough plaque removal. A color-coded smart pressure sensor lights up green, yellow, or red on the handle to indicate ideal, acceptable, or excessive brushing pressure, helping prevent gum damage from brushing too hard. The companion app uses the phone camera during brushing to provide an AI-powered 3D mouth map showing which areas were missed or need more attention, turning brushing into a more guided, data-driven routine.

• Dual heads cover both trimming and close shaving without buying two devices
• Constant RPM genuinely reduces hair pulling as the battery drains
• Fully waterproof, so shower use and rinsing clean are both fine
• USB-C and wireless charging rather than a proprietary connector

• Genuinely useful real-time pressure feedback
• Smooth, comfortable brushing motion
• Detailed AI-guided app coaching
• Premium build quality

• Replacement blade heads are an ongoing cost and specific to the brand
• Aimed narrowly at body and groin grooming rather than general hair cutting
• Foil head requires more careful technique than the guarded trimmer

• High price versus standard electric toothbrushes
• Replacement brush heads add ongoing cost
• App features require a smartphone