PetSafe Bark and Activity Counter

Amazon.co.uk Price: £22.20 (as of 07/02/2018 17:04 PST- Details)

Collar device collects vocalization and activity data
Distinguish between abnormal or inappropriate owner-absent behavior and general day-to-day activity as it pertains to bark and activity
Records up to 3,000 sessions ranging from 99 seconds to 999 hours each

Usually dispatched within 24 hours