Sony Smart Tennis Sensor
Tech specs 
Dimensions31.3 mm, Height: 17.6 mm
Weight8 grams
Battery lifeApprox. 180 minutes (Without Bluetooth), Approx. 90 minutes *Assuming 500 hits/swings in 60 minutes. (With Bluetooth)
Water resistanceWater and dust resistant (IPX5 rating)
Internal memoryData of up to 12,000 shots will be stored in the internal memory of the sensor.
Displayvia smartphone.
Sensors3-axis motion tracking sensor, vibration sensor
Smart watch compatibleAndroid Wear ready
RemovableYes
Compatible brandsWilson / Yonex / Head / Prince
Metrics 
PowerYes
SpinYes
Impact locationYes
Number of shotsYes
Shot typeForehand, backhand, serve, overhead
Spin typeTop spin, slice, flat
Swing speedYes
Ball speedYes
Live trackingYes
Video functionYes
OtherLive Mode Video: Record each shot data together with actual video footage. Can be analyzed later.
Motion Shot: Creates a sequential photograph to check form and technique.
Links 
View onAmazon
Amazon US rating2.5 out of 5 stars
Read moreReview