Hello, they're different in several ways
Sahel Harmony - comes with NuVinci Harmony continuously-variable automatic gears, 36V 15Ah battery pack, Impulse Premium LCD display (speed, distance, CO
2 emission savings, fuel cost savings, cadence, motor output, battery level, etc)
26-inch wheels with Schwalbe Big Apple tyres
Built-in rear wheel lock
Available in crossbar style 50cm and 55cm frame sizes
This is the bike I've been riding to and from our Kingston shop over the past 18 months or so. It's a great bike for use in the city but also tough enough for tracks and trails. It's never let me down, love it.
Tasman Classic - 8-speed Nexus Hub with Impulse 2.0 Shift Assist for better gear changes under power, compact LCD (speed, distance, trip distance, battery level), 36V 17Ah battery
28" Schwalbe City Lite gum tyres
Brooks saddle and handgrips
So the Tasman at £1995 has greater range, bigger wheels and a distinctive, classy look. The Sahel Harmony at £1695 (set to rise to £1895 in coming days) has state-of-the-art tranmission and a more compact frame and wheelbase.