VDO Cyclecomputing M6 Notice D'utilisation page 179

Heart rate transmitter battery life:
Approx. 1.5 years (approx. 1,000 ride hours, approx. 20,000 km (12,000 mi)
Wireless transmission ranges:
Speed transmitter: 75 cm
Cadence transmitter: 90 cm
Heart rate transmitter: 75 cm
Temperature indicator range on the display:
-20°C to +70°C/ -4°F to +158°F
Speed range for wheel size 2,155 mm:
Min 2.0 km/h, Max 199 kmh
Ride time measurement range:
Up to 99:59:59 HH:MM:SS.
Trip distance odometer measurement range:
Up to value 9,999.99 km or mi
NAVIGATOR measurement range:
From -99.99 to +999.99 km or mi
Total km measurement range:
Up to value 99,999 km or mi
Total ride time measurement range:
9999:59 HHHH:MM
Heart rate measurement range:
40 to 240 bpm
Cadence measurement range:
20 to 180 rpm
Wheel circumference setting range:
From 100 mm to 3,999 mm (3.9 to 157.4 inches)
Altitude measurement range:
-999 m to +4,999 m/-999 ft to 16,999 ft
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