1.83' LCD Square REFLEX 38 g Buckle Heart rate monitor (HRM) 255 x 39 x 11 mm (H x W x D) Water resistant (IP67) Universal Up to 3 hours Yes Bluetooth 5.2 - Calculator- Games- Stopwatch Silicone Magnetic charger 2 years

Connected GPS (via smartphone) 0.8' OLED display Circle GARMIN 33.8 g Buckle Garmin Connect IQ store 40 x 40 x 11 mm (H x W x D) Water resistant (5 ATM) Small (strap 125 - 190 mm) Up to 120 minutes Yes - Bluetooth- NFC - Android- iOS Silicone USB Garmin OS 2 years

Connected GPS (via smartphone) 0.8' OLED display Circle GARMIN 33.8 g Buckle Garmin Connect IQ store 40 x 40 x 11 mm (H x W x D) Water resistant (5 ATM) Small (strap 125 - 190 mm) Up to 120 minutes Yes - Bluetooth- NFC - Android- iOS Silicone USB Garmin OS 2 years

Yes 1.1' AMOLED display Circle GARMIN 38.2 g Buckle Garmin Connect IQ store Water resistant (5 ATM) Yes - Bluetooth- WiFi - iOS- Android Silicone USB cable 2 years

Yes 1.2' AMOLED full colour display Circle GARMIN 40 g Buckle Garmin Connect IQ store 41 x 41 x 12 mm (H x W x D) Water resistant (5 ATM) Strap 110 - 175 mm Up to 1.5 hours Yes Lithium-ion battery - Bluetooth- WiFi- NFC Silicone USB Type-C 2 years

Yes 1.1' AMOLED display Circle GARMIN 38.2 g Buckle Garmin Connect IQ store Water resistant (5 ATM) Yes - Bluetooth- WiFi - iOS- Android Silicone USB cable 2 years

Yes 1.5' Super AMOLED Circle SAMSUNG Silver 59 g Buckle eSIM Google Play Waterproof (IP68) 47 mm Up to 79 minutes Yes Up to 40 hours Lithium-ion battery - Bluetooth 5.3- WiFi- NFC Android 10.0 or later 16 GB storage FKM & leather hybrid Bixby built-in Wear OS 2 years

Smart doorbell RING Satin Nickel 193 g 126 x 62 x 23 mm (H x W x D) Amazon Alexa WiFi - iOS- Android Ring app 1 year

Mains AMAZON Charcoal black 2.57 kg - WiFi- Bluetooth (A2DP) - iOS- Android Alexa 1 year

Yes 45 mm Rectangular APPLE 39 g Pin-and-tuck closure Apple app store 45 x 38 x 10.7 mm (H x W x D) Water resistant (up to 50 m) Yes - WiFi 4- Bluetooth 5.3 Yes iOS Rubber Siri watchOS 10 1 year

Portable speaker No JBL Black No 520 g No 1.0 Bluetooth 5.1 65 - 20,000 Hz 8 Ohms Passive bass radiator x 2 68 x 175 x 27 mm (H x W x D) Up to 10 hours 20 W Racetrack driver: 44 x 80 mm Battery Up to 2 speakers 20 W AAC, MP3, WAV 2 years Yes

Traditional Hi-Fi system - DAB +- FM JVC Black & silver 7.2 kg Earphone x 1 2.0 Bluetooth 5.3 Yes 50 - 20,000 Hz 4 Ohms Yes 1.5' Tweeter x 2 Mains USB 2.0 x 1 - Bass boost- Treble control 90 dB MP3 Yes 1 year Yes