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Sunseeker

S4

$1,799

MSRP $1,799.99; Sunseeker US store sale $1,279.99 (late Oct 2026), frequently discounted

Rated lawn size: 0.25 ac26th of 30, highest first
Steepest slope: 42%25th of 30, highest first
Price: $1,79910th of 29, lowest first
Noise: 60 dB(A)10th of 26, lowest first

What it does well

  • No RTK antenna or wire: LiDAR mapping works under dense tree canopy
  • Up to 100 zones across 5 maps; fits 31.5 in (80 cm) passages
  • CES 2026 Innovation Awards Honoree

What to watch for

  • Leaves an uncut strip along edges; trimmer still needed (Tom's Guide)
  • Cannot mow in rain or fog (LiDAR limitation); rear-wheel drive limited to 42% slopes
On sale
2026-03
Price
$1,799 (MSRP $1,799.99; Sunseeker US store sale $1,279.99 (late Oct 2026), frequently discounted)
Rated lawn size
10,800 sq ft (0.25 acre)
Steepest slope
42%
Navigation
LiDAR + Vision
Boundary wire
Not needed
Drive
Two-wheel drive
Cutting width
7 in
Cutting height
1.6 to 3.2 in
Noise
60 dB(A)
Battery
20 V, 4 Ah (Tom's Guide spec table); 80 min charge time (manufacturer FAQ)
Mowing per charge
90 min
Obstacle avoidance
360° 3D LiDAR + AllSense AI vision camera (10 TOPS chip)
Edges
Weak — blade sits ~110 mm (4.3 in) inside housing, leaves uncut border
Several zones
Yes
Anti-theft
Optional 4G-GPS module
Connectivity
Wi-Fi, Bluetooth
Rain sensor
Yes

Closest rivals on size and price

6 models

Navigation
AnthbotM9New$8990.25 ac45%58 dBRTKVision
MammotionYUKA mini 2 1000HNew$1,3990.25 ac45%57 dBLiDARVision
Ecovacs GOATO1000 LiDAR ProNew$1,5000.25 ac45%61 dBLiDAR
SunseekerS4New$1,7990.25 ac42%60 dBLiDARVision
MammotionLUBA mini 2 AWD 1500HNew$1,7990.37 ac80%65 dBLiDARVision
EufyE18$1,8000.3 ac32%56 dBVision