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IMPORTANT
RHYTHM
RTHM
WIRELESS PULSE MONITOR
For iPhone, iPad, iPod touch and Android
©2012 SCOSCHE INDUSTRIES, INC.
SI 300RTHM (English) 10/12
• Please refer to the following video links for more information:
For IOS devices - http://www.scosche.com/rhythmvideo
For Android devices - http://www.scosche.com/mytrekandroidvideo
• DISCLAIMER: This is not a medical device and is intended for recreational use only. Consult a physician
prior to use to determine appropriate heart rate zones.
VOL + (raise volume)
VOL - (lower volume)
ARMBAND
LED
FIGURE 1
MFB
Press once - on/off/play/pause
Twice - next track
Three times - previous track
Press & hold 3 seconds - turn off
USB
CHARGING
BASE
CHARGING
TERMINALS
SENSOR
BATTeRy WARNINgs
This product contains a rechargeable lithium-ion battery that should only be removed and replaced by a
professional. Battery can explode or leak and cause injury if removed by the user and crushed, installed
backwards or exposed to excessive heat. Keep out of reach of children and dispose of properly. If swallowed
promptly contact a doctor and call your local poison control center.
HeAlTH WARNINg
This is not a medical device and is intended for recreational use only. No claims are made or implied in the
results obtained by the use of our equipment. Consult a physician prior to undertaking any physical activity
with the SCOSCHE
®
RHYTHM. Do not rush into an advanced workout with the SCOSCHE
®
RHYTHM unless
you have significant exercise experience and no history of medical illness due to exertion or other fitness
related health problems.
This device, the SCOSCHE
®
RHYTHM wireless pulse monitor, and other SCOSCHE
®
accessories are consumer
devices, not medical devices, and could suffer interference from external electrical sources. The pulse readings
are for reference only, and no responsibility is accepted for the consequences of any erroneous readings.
DIsclAIMeR
Scosche Industries shall not be liable for any incidental or consequential damages resulting from the
performance or use of this product.
In the interest of continued product improvement, this company reserves the right to revise the manual or
include changes in the specifications of the product described within it at any time without notice and without
obligation to notify any person of such revision or changes. The information contained in this manual is
provided for general use by the customers.
Do not attempt to remove the sensor from the actual device. This can cause damage that may render the
SCOSCHE
®
RHYTHM unit inoperable.
PARTS INCLUDED
(1) RHYTHM unit
(1) Charging cable
(2) Armbands (small & large)
(1) Quick-start guide
UseR gUIDe
FIGURE 2
2
RHyTHM DeVIce OVeRVIeW
HOW SCOSCHE
®
RHYTHM WORKS
Blood is constantly moving through the human body and consequently the amount of blood under the
skin at any given point is constantly changing. The main forces of blood movement are the heart pumping
and physical body movements. SCOSCHE
®
RHYTHM armband detects blood movement by shining light
onto the skin and measuring the amount of light that is absorbed by the skin.
In addition RHYTHM uses an accelerometer similar to what is used in popular gaming controllers to detect
body movement and then subtracts the movement from the light measurement. All of the data collected from
this process is sent to the user’s iPhone or iPod touch for further filtering and signal processing. The final
output is displayed on the iPhone or iPod touch as the user's pulse.
SENSOR ACCURACY
Testing within Scosche Industries has shown the average pulse to be within +/- 3% of a chest strap.
SPECIFICATIONS
Armband sizes & weight:
Small: 10'' / .25 oz.; Large: 16'' / .40 oz.
Sensor size & weight: 2.17''W x 1.92''H x .58''D / .70 oz.
Weight with Small Armband: 1.0 oz.
Weight with Large Armband: 1.10 oz.
Charging Cable: 39.5''
Charging Time: 2 hours
Battery type: Lithium-Ion
Battery life: 6 Hours
Waterproof: International Protection Rating IP67
Operating temperature: 0°C to +45°C / 30°F to 113°F
Storage temp: -20°C to +60°C / -4°F to 140°F
WORKS WITH:
iPhone 5, 4S, 4 and 3GS
iPad 3rd and 2nd generation, iPad
iPod touch 5th, 4th and 3rd generation
(iOS 5.1 or higher required)