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Thanks to bone-conduction technology SONR receiver transmits the sound through the bones to the inner ear.
The built-in metronome function allows to develop two skills necessary for swimmers: control of the frequency of the strokes and calculation of the distance passing time.
SONR's receiving distance is up to 984ft (300 meters), and up to 3 ft (1 meter) in depth.
Using SONR the coach can guide an unlimited number of the athletes at the same time, communicating with all of them or dividing them into smaller groups thanks to the multi-channel system.
SONR can be used in all water sports, in any kind of training and water.
SONR receiver is sand-proof, waterproof and dustproof. Can be used even in salty water.
Package includes: SONR receiver; Goggle clip; Charging cable; Ear plugs; Radio transmitter; Radio charger; Instruction manual
SONR is a wearable radio receiver for swimmers, which allows the coach to improve their technique, during the training even when the swimmer's head is underwater.